How to turn off service trailer brake system

The fact that you do get TRAILER CONNECTED when your trailer attached means that the system works with a trailer (you have trailer brakes), but the ITBC system finds some fault when no trailer is connected, often associated with wet weather, shorted or frayed wires, dirty connections, etc.

Brake assist is a driver-assist safety feature that intervenes to help a car stop faster during emergency braking. The system detects when a driver engages the car's brake so hard without an appropriate braking response. So, it releases extra braking force to shorten the braking distance, thereby averting unexpected crashes.Jun 21, 2019 · If so, fix your abs problem first and your SERVICE TRAILER BRAKE SYSTEM message will go away. Likely, if this message is displayed, you will have NO TRAILER BRAKING, but not a lockup of trailer brakes. A common cause of this (among many, many causes) that that the trailer brake relay is bad. But check it before you replace it. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...5. If the CHECK TRAILER WIRING message only reappears when connecting the trailer wiring harness to the vehicle, the electrical fault is on the trailer side. SERVICE TRAILER BRAKES or REDUCED TRAILER BRAKING: This message will display if the electric trailer brake performance is either reduced or non-functional.- Service Trailer Brake System with DTC C1114. This symptom is caused by a short to power on circuit 47 or a poor trailer ground. GDS2 Data GDS2 (scan tool) can be used to view several different data parameters in the CCM for the trailer brake system. The Trailer Brake Type and Trailer Brake

2014 Silverado 2500hd lml. A couple of days ago started displaying "service trailer brake system" on the DIC. When hooked up to a trailer all lights and turn signals work. Just no power to the trailer brakes. I've replaced the trailer brake control relay above the spare tire. I've replaced the 30a stud 2 square fuse (slot 58) as well as the 20a ...I have a 2014 gmc 2500 duramax sierra with a service trailer brake system code on dash.Checked wiring, cleaned ground, replaced trailer brake relay, replaced trailer brake control module replaced one blown fuse. nothing yet. Did not replace the trailer brake control switch yet. … read moreJul 11, 2022 ... RV Trailer Brake Disconnected Fix. 20K views · 1 year ago ...more. Switch It Up. 40.9K. Subscribe. 446. Share. Save.If no condition exists. Connect the electrical connector from the trailer into the trailer connector of the vehicle. Start the vehicle and select the “Start Light Test” function through the trailering App. Verify the appropriate lights on the trailer turns ON and OFF. If the trailer tail lamps do not turn ON and OFF.How to use the parking brake in a Dodge Ram 1500? Watch this video to learn the simple steps and tips for turning on and off the parking brake in your truck. This video also shows you how to ...9 posts · Joined 2018. #4 · May 23, 2018. No, it was Service Trailer Brake. Even shut it down and restarted it to see if I read it correctly. Gave the same message. Tried hitting the button to turn Park Sense back on and it wouldn't do it. Although the Park Sense light went off by the time I arrived at work.Service Electronic Stability Control 2. Service Trailer Brake System 3. Park Sense Rear Braking Assist Off 4. Service light was on (not sure if engine or traction control) I went out an hour or so later and the situation resolved itself. I appreciate whatever Ram Cares can do to help Salerno Ram with correcting these issues.

May 5, 2022 ... Hey guys! Welcome back to the channel. Today we take a look at a 2013 Chevrolet Silverado 2500HD w/ a 6.0l V8 engine.Since the 2016 model year, every Tundra equipped with the 5.7liter V8 engine has also included an integrated trailer brake system as standard equipment. This...At first I brushed it off thinking I'll get to it later. Then it turned to constant beeping. Then my parking brake light, ABS light, and service power steering light. Then my power steering cut off. The gauges also kept cutting in and out along with the motor/trans cutting out every time the gauges went out. First I went and checked all the ...45 posts · Joined 2018. #1 · Nov 3, 2022. In addition to the High Temp warning light, I get an intermittent Service Trailer Brake System light and no trailer brakes. This happened several times to us in our maiden 2500 mile voyage. I've tried shutting off the truck, plugging the trailer into the bumper 7 pin (it usually plugs into the bed 7 ...Posts: 14. Likes: 1. Received 8 Likes on 5 Posts. 771 miles on the truck on a dry day when I parked the truck. Got off work and fired the truck up and this popped up. It was raining when I got off work. So about three miles into the drive home I pulled over and restarted the truck. Same message popped up. When I got home (after 22 miles on the ...Air Bag ON/OFF indicator1 Brake system warning1 [yellow] High coolant temperature warning Eco drive mode indicator Mud & sand mode indicator4 Low engine oil pressure warning Brake Override System/Drive-Start Control warning Charging system warning1 Brake hold operating indicator1,2 Brake hold standby indicator1 Front and Rear Parking Assist

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Thumbs up if you like the video👍🏼 A quick how to on adjusting trailer brakes. This is simple for most DIY folks who wanna do a quick seasonal adjustment. L...The “Service Trailer Brake System” message informs you that the trailer brake system has disengaged due to wiring issues or some other problem. The brake system may be hampered if the trailer being towed doesn’t have enough power. In addition to the warning, there can be further symptoms. The problem may make it difficult to stop the trailer.The Trailer Brake Controller switch is located on your center console. When this feature is enabled, the brakes on your trailer will engage automatically when you use the brakes on your vehicle. The video below helps explain what the Trailer Brake Controller on your vehicle does and how to set it up in your message center.J. j1mm1sh Discussion starter. 9 posts · Joined 2017. #1 · Feb 21, 2017. Been getting a random "service trailer brake system" warning while driving with no trailer. With trailer I get that code every time I start, and must dismiss it. While towing, it seems as if the brakes are dragging, slowing me down, and killing mileage (7-8 with 1900# v ...May 11, 2020 · 5. Your brake pads are worn. Depending on your car make, model, and year, your service brake system light may become illuminated when the brake pads need to be replaced. However, like with brake fluid contamination, your car may not alert you to the need for new brake pads with a light. sambor. First, go read your owners manual-the flashing lights are part of a security and trailer detection system. Second, go to gm-techlink.com and search "trailer lighting". Several items there for the new vehicles. 1957 GMC 1 ton flatbed with 22K original miles.

Reply. jcubio93. •. It's either the trailer brake controller switch itself or the trailer brake module located in the rear under the bed based on the little bit of research I've done. I've had this issue with my 2018 before and I just flick the trailer brake controller a few times and it goes away for a while which leads me to believe ...Follow these steps for a successful brake service: Raise the trailer: Use a jack to lift the trailer, supporting it with jack stands. Remove the wheel: Unscrew the lug nuts and remove the wheel, exposing the brake assembly. Remove the old brake pads or shoes: Follow the manufacturer's instructions to remove the worn components.The information contained in this publication was correct at the time of release.In the interest of continuous development, we reserve the right to change specifications, design or equipment at any time without notice or obligation.No part of this publication may be reproduced, transmitted, stored in a retrieval system or translated into any language in any form by any means without our ...The brakes started working fine until I stopped for fuel. When I started to leave the station, the same issue again. I will check the fuse and replace again in the morning to see what happens. I have a service appointment on the 5 wheel next week and will have the brakes and electrical checked. If it checks out good then I am off to the dealership.Question: Every part on the 3500hd integrated brake controller has been changed at least once all but the wiring even went so far as to change the plug in the bumper. per the fsr for chevy. it started at 21000 miles the 2500 at less than 8000. Dealership says not to bring the 2500 in yet can not figure out the 3500.GMC Yukon Brake Warning Light Causes. The brake warning light indicates that your Yukon has detected that one of its major brake components has failed, typically seen through a pressure loss. You’ll feel a loss of pressure that manifests itself in the form of a “mushy” brake pedal (low brake fluid level). If the brake light is only coming ...If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.With the actuator completely disassembled, place the front roller cover <7> into position. Hold the front roller <4> from the bottom, lining up the holes and thread the front roller bolt <5> through the cover and roller into place. Secure bolt <5> with lock washer <40> and nut <41>. Tighten nut to 75 ft-lbs.The service brake system light is a common and essential indicator on your vehicle's dashboard. When this light turns on, it typically means an issue with your braking system needs attention. You can take several steps to turn off this light and ensure the safety of your vehicle. A common reason the service brake system light appears is when ...The information contained in this publication was correct at the time of release.In the interest of continuous development, we reserve the right to change specifications, design or equipment at any time without notice or obligation.No part of this publication may be reproduced, transmitted, stored in a retrieval system or translated into any language in …

2 mins. Video. 1 mins. Replacing Trailer Brakes: What to Look For Each Year Join RV Repair Club to continue watching for $10.00 per month / $98.00 per year. GET VIDEO ACCESS. In this quick video lesson, RV maintenance expert Dave Solberg teaches you simple tips for replacing trailer brakes during your annual RV inspection.

I connected a boat trailer that had some really old / frayed wiring. Connected trailer's 5-way into truck's 7-way adapter, all worked fine initially. Eventually trailer wiring frayed off completely or shorted out, …1. Start the engine and allow it to idle for a few minutes. 2. Place the vehicle into park with your foot firmly on the brake pedal, then turn off the engine. 3. Locate the fuse box under the hood of your Ram 1500 and open its cover using a screwdriver or wrench depending on how yours is attached. 4.6836 posts · Joined 2011. #2 · Aug 9, 2018. I had a sensor on the master brake cylinder go bad that caused this. 2010 Gmc 2500 Duramax 853,500 Odometer miles - sold Nov 2018. 2013 LT CCSB SRW bought with 508,000 miles, now over 703,000 miles. 2013 CrewCab and chassis with 9' Hillsboro aluminum flatbed 84,000 miles.GMC Yukon Brake Warning Light Causes. The brake warning light indicates that your Yukon has detected that one of its major brake components has failed, typically seen through a pressure loss. You’ll feel a loss of pressure that manifests itself in the form of a “mushy” brake pedal (low brake fluid level). If the brake light is only coming ...The dealership consulted with GM factory and determined the abs control module at fault. I had the abs module replaced and reprogrammed the system. All worked great for about a week when the dic began with the service trailer brake system warning. The cruise control became intermittent and via my OnStar connection determined the cO035 and c0040 ...GDS can be used to view the following Trailer Brake Control Switch parameters in the Chassis Control Module: Manual Trailer Brake Apply Request Signal 1. Manual Trailer Brake Apply Request Signal 2. Trailer Brake User Gain Switch Below are the normal working ranges for the Trailer Brake Control Switch parameters: Manual Apply Slide Lever Fully ...Dec 19, 2023 · The best way to reset the service trailer brake system is to fix the malfunctioning component that triggered the ECU to generate this message. These components include the trailer brake control switch, brake fuse, controller relay, trailer connector, and wiring connections. You can also try disconnecting the negative battery terminal, but its ... How to Replace Trailer Brakes. Perform a Brake Controller Inspection. Expose the Inner Brake Drum. Inspect the Brake Drum Assembly. Remove the Brake Drum's Inner Wheel Bearing and Seal Components. Clean the Removed Drum and Axle Spindle. Replace the Inner Brake Assembly. Add New Wheel Bearings and Races, If Needed.

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42 posts · Joined 2018. #1 · Jan 18, 2022. While I have seen similar posts in older model threads, I haven't seen it in the 2020+ threads. I continue to get the Service Trailer Brake System when starting my truck and my trailer brakes obviously do not work. The dealer replaced the power module already, but say they need "DAYS" to …Carefully remove the wheel to expose the brakes. Get a hold of the “star wheel” adjuster located on your brakes. This should be attached to the brake shoes. Next, using your brake adjustment tool or your screwdriver, tighten the adjuster till you are unable to spin the wheel.Dec 9, 2023 · Locate the trailer brake control module. In the GMC Sierra, this module is usually located under the dashboard, to the left of the steering wheel. Once you’ve located the trailer brake control module, press and hold the manual control button for about 5 seconds. This button is typically labeled with a triangle or “M” symbol. In one setup, the brakes are set to react to the driver's brake pedal with a slight delay, and with a predetermined level of stopping action. That level is set according to the weight of the trailer. These systems are often more user-friendly and are usually cheaper. In another system, the brakes of the trailer automatically mimic the actions ...Pull the DTCs with a code reader and post them ("SERVICE TRAILER BRAKE SYSTEM" is thrown in response to a couple dozen different DTCs, and to make it even more complicated, some -- but not all -- of those DTCs result in the trailer brakes being completely disabled). ... Agree -- the manual control will fire the pump off while sitting and then ...Hydraulic System- Can activate one brake at a time. Usually, it piggybacks off of the ABS. How It Uses These Components. The StabiliTrak control unit uses data from its sensors to apply a specific brake or reduce the engine power to correct the slide and get your Silverado pointed back in the right direction.How I fixed the trailer brake controller issue on my 2015 GMC Sierra 2500 HD. (Also how to silent the waring alarm.)Affiliate links below: Small commission e...I connected a boat trailer that had some really old / frayed wiring. Connected trailer's 5-way into truck's 7-way adapter, all worked fine initially. Eventually trailer wiring frayed off completely or shorted out, …About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...2016 Yukon Denali. Vehicle got stuck in the snow. A ball was used in the hitch to pull it out. Next day the battery was dead. After jumping, it had the Service Trailer Brake System message. Didnt think anything of it except now the battery won't hold a charge. It will jump and run fine but left...5. Turn on valve at pressure bleeder and check for leaks where the bleeder head enters the master cylinder reservoir. 6. Start bleeding with the brake at the farthest end of the brake line. If trailer has tandem brake axles, start with the brake at the farthest end of the brake line on the rear axle first. 7. ….

Apr 24, 2013 · My "service trailer brake system" would come on after removing the weights distribution part of the hitch..... No reason it should but I have found if you go into the fuse box under the hood and look on the back of the fuse cover to locate the ITBC fuse. Take the fuse out and put it back in. It seems to reset itself. Do this when the vehicle is ... 2 mins. Video. 1 mins. Replacing Trailer Brakes: What to Look For Each Year Join RV Repair Club to continue watching for $10.00 per month / $98.00 per year. GET VIDEO ACCESS. In this quick video lesson, RV maintenance expert Dave Solberg teaches you simple tips for replacing trailer brakes during your annual RV inspection.Q&A: Does the Tekonsha P3 Trailer Brake Controller Turn Off or Stay On All the Time; Q&A: How do I Tell if the Brake Controller is Bad; Q&A: How to Temporary Disable Trailer Breakaway System so Trailer Can Get to Mechanic to Fix Short; Q&A: How To Disconnect Power To Trailer Brakes on Gooseneck TrailerMaintenance Shop - Trailer Brake Module Fault, Service Advancetrac, No Crank No Start - Please Help!!! I own a 2011 F-150 Platinum 5.0 2wd with 42,000 miles! The truck just recently in the last month has been randomly dying and leaving me on the side of the road and not starting back up. After a few hours it will...The last 3 trips out we have been getting a random "Check trailer wiring" "service Trailer Brake System" "Trailer Connected" messages on the DIC. I have towed this trailer with my old truck and just started towing with this truck in March. ... I’m guess it was intermittent If the wires some how made a connection and made it turn off ...3. Locate the Trailer Brake System Settings. In the dashboard menu locate the towing or trailer settings. In this section you'll discover options that're relevant, to the trailer brake system. 4. Select the Option to Turn Off. In the trailer brake system menu, select the option to turn off the trailer brake system GMC Sierra.@ChadG You can disable the message from popping up in your top menu button (Mine on my 2013) only temporarily, but check your fuse first before you replace any other part. Mine was the fuse in fuse box under hood. A 30 amp at front , closest to rad. I did check the relay and no signs of dirt or corrosion. Test 7 way plug and all Ok!546. 119K views 1 year ago. Here's how to remedy that pesky "Service Trailer Brake System" message that seems to pop up on GM vehicles over time. ...more. Thank you for watching! \m/Want...Broken trailer brake. The stable state of the vehicle brakes is necessary for their standard performance. One broken part stops the workability of all other brakes in one system. As a result, the trailer becomes uncontrollable on-road, and damages to the surrounding vehicles can occur. This can also make lead to trailer brakes smoking.Carefully remove the wheel to expose the brakes. Get a hold of the “star wheel” adjuster located on your brakes. This should be attached to the brake shoes. Next, using your brake adjustment tool or your screwdriver, tighten the adjuster till you are unable to spin the wheel. How to turn off service trailer brake system, How to Reset Service Trailer Brake System . If your service trailer brake system is not working properly, you may need to reset it. Here’s how to do it: 1. Park your vehicle on a level surface and apply the parking brakes. 2. Locate the service trailer brake system’s fuse in the fuse box. 3. Remove the fuse and wait 30 seconds before ..., 32 posts · Joined 2020. #1 · Mar 20, 2021. Just drove my 2021 Denali 3500 DRW 250 miles to pick up our new 2021 Alliance Paradigm fifth wheel with the disc brake option. Hooked up and ready to go--no trailer brakes and a "service trailer brakes" message in the DIC. After a few frustrating hours trying to resolve, I did some research and found ..., Check Brake System Warning. I had a check brake system warning light pop up on my home driving on the highway. After it chimed three times, the brake warning light remained on the cluster. The brakes feel fine and the parking brake is not engaged. I turned the truck off after I got off the highway, restarted, and the warning light disappeared., About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ..., South Main Auto Repair. 47 S. Main St. PO Box 471. Avoca, NY 14809. Disclaimer: Due to factors beyond the control of South Main Auto Repair, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. South Main Auto Repair assumes no liability for property damage or injury incurred as a ..., The service park assist warning message on your gauge cluster indicates a possible problem with your park assist system. Dirty park assist sensors, damaged wirings, and trailer hitches can trigger your vehicle's service park assist message. The location of park assist sensors can vary depending on your vehicle's year, make, and model, but ..., Step 3: Tighten the adjustment wheel. Using a brake spoon, brake adjustment tool or flathead screwdriver, turn the star wheel adjuster inside the brake chamber. The adjuster is typically located below the brake drum. Push down on the brake spoon handle so the adjuster wheel is pried upward. This will tighten the brake pads or shoes. , Do you want to know how to operate the trailer brake on your 2017 Chevy Silverado? Watch this how-to video and learn the basics of this feature, which can help you tow safely and smoothly. Compare ..., To turn off the Service Park Brake in your Jeep Cherokee, follow this step-by-step guide. First, locate the Service Park Brake button or switch. Press and hold it for 10 seconds. Next, release the button or switch and wait for the indicator light to turn off. Finally, test the Service Park Brake to ensure it is successfully disabled., May 1, 2021 · This video shows how to correct the annoying "Service Trailer Brake System" message that randomly appears on your dash while driving. The fix is to change t... , I have 2008 chevy 2500 hd service trailer brake is on, I have replaced the module on the underside by spare tire and I have also redid wireing to light socket on bumber, everything is good, now I can turn truck.on and in can manually engage and trailer brakes work.once I.hit brake pedal they quit working have to.turn truck.off for them to.work again., The system is active when the vehicle is in Reverse and traveling at a speed above 1 mile per hour (mph) but below 7 mph. A message and warning indicator will appear when the system automatically applies the brakes. How to Turn Reverse Brake Assist On or Off. While in Park, touch Settings on your vehicle's SYNC ® screen**. Tap Driver Assistance., They replaced it and power bled the front brakes. No problems now. The sensor part number is 1 15838718 if that helps anybody. Probably not a big deal to fix yourself if you can find the sensor. I see the one plug with wires on the master but I'm assuming that's the brake lights., 2.4) Actuators. 2.5) Hydraulic Lines and Fluid. 3) How the Various Components of Trailer Brake Systems Work to Stop the Trailer. 3.1) Electric Brake Operation. 3.2) Surge Brake Operation. 3.3) Electric Over Hydraulic (EOH) Brake Operation. 4) Final Note on Trailer Brake Systems., It’s important to choose a wiring harness that matches both your vehicle and trailer’s electrical systems. 5. Wire Strippers and Crimping Tool. To properly install the wiring for your electric trailer brakes, you’ll need wire strippers and a crimping tool to remove insulation from the wires and securely connect them., TDFDiesel. 19429 posts · Joined 2007. #4 · Jun 15, 2013. Service Trailer isn't a check engine light, clearing codes is a check engine light. Something causes the Service Trailer Brake System, I had mine pop on along with Traction Control due to a problem with a wheel speed sensor. Tony - CLICK TO READ: FORUM RULES OR DF STAFF!, Brake assist is a feature in modern cars that assists drivers in coming to a faster stop. It accomplishes this by detecting when the driver is braking hard and then supplying more braking force to help reduce the stopping distance. Some drivers may choose to disengage brake assist because they believe it makes braking more difficult., Maintenance Shop - Trailer Brake Module Fault, Service Advancetrac, No Crank No Start - Please Help!!! I own a 2011 F-150 Platinum 5.0 2wd with 42,000 miles! The truck just recently in the last month has been randomly dying and leaving me on the side of the road and not starting back up. After a few hours it will..., Carefully remove the wheel to expose the brakes. Get a hold of the “star wheel” adjuster located on your brakes. This should be attached to the brake shoes. Next, using your brake adjustment tool or your screwdriver, tighten the adjuster till you are unable to spin the wheel., Step 3: Tighten the adjustment wheel. Using a brake spoon, brake adjustment tool or flathead screwdriver, turn the star wheel adjuster inside the brake chamber. The adjuster is typically located below the brake drum. Push down on the brake spoon handle so the adjuster wheel is pried upward. This will tighten the brake pads or shoes., BUT, since it also occurs with no trailer, twist and remove trailer connect from truck bumper. Push tab in at 9 o'clock, then rotate CCW. Once out of the bumper, unplug it from the chassis by pulling out gray safety tab, the depressing the tab. Now, once free, follow the chassis harness forward., 546. 119K views 1 year ago. Here's how to remedy that pesky "Service Trailer Brake System" message that seems to pop up on GM vehicles over time. ...more. Thank you for watching! \m/Want..., How to Turn Off ABS Light on Ford F150. If the ABS light is on in your Ford F150, it signals a potential problem with the Anti-lock Brake System. While you can try the battery disconnect method (turning off the vehicle, disconnecting the battery, waiting, then reconnecting) to reset the light, it's essential to diagnose the root cause., In case the brake fluid level is low, topping it off should turn off the ABS warning light in Ram. But it is important to further investigate the reason for low brake fluid level. ... The three common causes of low brake fluid are worn brake pads, worn rotors, and a leak in the system. Check the condition of the brake pads and rotors, also see ..., I was getting several messages on my control panel. Service Brake System, Service Stablitrak, Traction Control Off. In this video I go over the possible ca..., In case the brake fluid level is low, topping it off should turn off the ABS warning light in Ram. But it is important to further investigate the reason for low brake fluid level. ... The three common causes of low brake fluid are worn brake pads, worn rotors, and a leak in the system. Check the condition of the brake pads and rotors, also see ..., Prices listed are MSRP and are based on information updated on this website from time to time. All 2023 Ford F-150 videos at your fingertips! Choose from the list of informational how-to videos to learn everything you need to know about your Ford vehicle., You have to reset it. Try removing one of the battery terminals then put it back on. Posted on Jul 19, 2008. adrian halligan. SOURCE: toyota rear warning light indicator. replace brake petal switch mounted above brake pedal.adrian. Posted on Feb 16, 2009. Anonymous. SOURCE: dash warning light not found in manual - hot to turn it off., I keep having Service trailer Brake system alert on 2017 Sierra 2017. I have replaced the module under spare tire and 30 amp fuse under hood. ... i have a 2005 gmc sierra 1500 crew cab. i recently hooked up a trailer and the right turn signal and brake light did not work. the lights on the trailer are brand new. i narrowed it down to the 7 pin ..., Support My Channel! Paypal - [email protected] / Cashapp - $cdarnau2014 - 2018 GMC SIERRA, CHEVROLET SILVERADO, SERVICE TRAILER BRAKE SYSTEM REPAIR. C1117 REPA..., Here is a chart showing some trailer brake controller problems and the reasons behind them. Most Seen Problems. Probable Reasons. The trailer brake is incompatible with the brake pedal. 1. Faulty brake wire connection. 2. Mismatched adapter wirings. LED display fails to show trailer connectivity., When the ABS light / comes on in your Silverado 1500, the anti-lock braking system is disabled. The vehicle can still be braked without ABS. But if the BRAKE light / also comes on, it indicates a malfunction in the braking system and you must stop driving due to risk of brake failure.. 1. Bad wheel speed sensor. Chevy Silverado 1500 has an ABS sensor at each wheel hub which measures the speed ..., Service Brake Assist, Causes #4 - Bad Wiring. Brake assistance relies on a complicated series of wires for communication between the different sensors. Damage to these wires causes interruption to these signals, resulting in the service brake assist warning light turning on.