2016 Silverado Service Trailer Brake System

2016 Silverado Service Trailer Brake SystemNo message! Plugged the trailer back in, and drove away. trailer brake system will operate with 1 to 4 pairs of trailer brake magnets (1 pair of magnets = 1 axle). I had it in a repair shop today. Make sure nothing is connected to the trailer brake power line in the 7 pin connector on your trailer. However, this trailer brake system is susceptible to wire deterioration, binding, seizure, and corrosion. Service Trailer Brake System fix on a 2016 Chevy Silverado Cam Hart 31 subscribers Subscribe 75 Share 19K views 1 year ago GM Part #: 84108373 The notorious Service Trailer Brake System. Likely, if this message is displayed, you will have NO TRAILER BRAKING, but not a lockup of trailer brakes. Just no power to the trailer brakes. A vehicle’s trailer brake controller system is an OEM or aftermarket module or device installed on the vehicle to help the driver regulate the speed level of the trailer, as well as the stopping. Service Trailer Brake System fix on a 2016 Chevy Silverado Cam Hart 31 subscribers Subscribe 75 Share 19K views 1 year ago GM Part #: 84108373 The notorious Service Trailer Brake System. SERVICE TRAILER BRAKE FIX!!!! Chris Arnau 12. (1204 reviews) Code: 11755 Our Price: $11. 85K subscribers Subscribe 154 56K views 3 years ago GMC Sierra and Chevy Silverado 2014 and up Service trailer. Bypassing Factory Brake Controller and Installing Aftermarket. 00 Trailer Brake Controller Proportional Controller Electric Electric over Hydraulic Automatic Leveling Dash-Mounted Knob Hidden Up to 3 Axles Indicator Lights Redarc more information >. Anything else will only cause problems. If they find no fault, the lights will automatically go off. 14’ Silverado ‘Service Trailer Brake System’ FIX kickpushcruise 222 subscribers Subscribe Share 81K views 3 years ago Are you getting a Service Trailer Brake System warning on. The Relay is cheaper than the module and does not require any programming by a dealer or shop. 2015 Silverado 2500 Trailer Brake Control Module Location. 1) Trailer Brake Relay and Module - located above the drivers rear axle on the frame, next to the Trailer Brake Module. Power flows thru the module to the relay, then onto the trailer braking system. Service Trailer Brake System (Silverado, Sierra, Tahoe, Yukon) 94K views 1 year ago #powersports #nhtsa. You need to remove the module then check the wiring between that module and the Chassis control module which is the travel brake controller. I hit it with compressed air and added dielectric grease, but continue to get the message. If no issues are found, the mostly like issue is with the trailer brake control switch. I 114,000 Chevy Mechanic: Pete, Auto Service Technician Category: Chevy Chevy Mechanic: Pete This happens when I start a vehicle and I haven't had a trailer hooked up in over six months Chevy Mechanic: Ask Your Own Chevy Question Chevy Mechanic:. I bought this to try preventing a random "Service Brake System" chime/alert. The error may not occur for days. trailer brake fuse? 07. Just service trailer brake. 2016 Chevrolet Silverado 1500 TSBs (Technical Service. 22860 - service update. I would check every inch of wiring on the trailer and make sure grounds are all good. When hooked up to a trailer all lights and turn signals work. Duramax: Why Does My Truck Say Service Trailer Brake System?. what else? read more Pete Automotive Diagnostic Spe General auto certifications 39,246 satisfied customers Service trailer brake system. 2016 Silverado Trailer Braking System. Where is trailer brake relay on my 2016 chevy Silverado 2500 ,found trailer brake module , did they do away with it, hauling trailer service trailer brake system keeps coming on, also check trailer wiring popos up also figured Id change relay first any help would be greatly appreciated thanks asked by: Bob Helpful Expert Reply:. Silverado - Service Trailer Brake System - No Trailer. I pulled the plug from the inside and likewise, no corrosion or trash. "the use of lci’s sway command® with 2014-2020 gm trucks and suvs equipped with an integrated trailer brake control module (itbcm) could cause reduced braking effectiveness, induce loss of brake control and increase the risk of injury when towing a trailer. 2016 silverado 2500 trailer brake service alert comes on. Check the LIN bus lien which is the Grey wire that runs between the 2. However, I was able to disassemble it, remove the controller / slider board, and use it to replace the existing slider control. The trailer brake control system on the new body style trucks is compatible with two types of trailer brake systems: electromagnetic orelectro-over hydraulic trailer brakes. I would check every inch of wiring on the trailer and make sure grounds are all good. Service Trailer Brake System – Meaning and Causes. com FREE DELIVERY possible on eligible purchases. A vehicle's trailer brake controller system is an OEM or aftermarket module or device installed on the vehicle to help the driver regulate the speed level of the trailer, as well as the stopping. Expert lifetime technical support on all purchases. Just no power to the trailer brakes. com / Cashapp - $cdarnau 2014 -. PIT5311D Check Trailer Wiring Message and/or Service Trailer. Aside from the warning, there could be other symptoms. I recommend checking out the Curt Echo Mobile Trailer Brake Controller # C51180 because it is an easy-to-use brake controller that simply plugs into the 7-way on the back of your '16 Silverado 2500. PDF Condition/Concern Recommendation/Instructions Warranty Information. This term means that you have a braking system for your trailer that is operated whenever you press the brake on your tow vehicle. Likely, if this message is displayed, you will have NO TRAILER BRAKING, but not a lockup of trailer brakes. If you are receiving power to the brake signal wire at the vehicle's trailer connector while the manual override is engaged, the problem is more than likely on the trailer side. GM Recalling Silverado, Sierra for Second Time for Brake-Failure Issue GM is updating a recall issued last December for the brake controls in 2019 Chevy Silverados, GMC Sierras, and some. The trailer brake control system on the new body style trucks is compatible with two types of trailer brake systems: electromagnetic or electro-over hydraulic trailer brakes. Employee unplugged the trailer. Just service trailer brake. Trailer Brake Service message comes up on my 2017 Silverado…">Trailer Brake Service message comes up on my 2017 Silverado…. this bulletin provides a service procedure to do an inspection and wire repair as needed on certain 2016 model year chevrolet silverado hd, silverado ld, gmc sierra hd and sierra ld vehicles. The level should be as close to the Max line as possible. The owner’s manual should have a diagram for each of those fuses and fuse boxes. I have a 2016 Silverado showing U1556 code and Service trailer brake No communications with chassis control module I have checked fuses and would like to know if chassis control or trailer brake power …. When hooked up to a trailer all lights and turn signals work. The Chassis Control Module K38 (CCM) must determine which type of brakes the trailer is equipped with so the system can output correctly for. It is suggested to make a tester where the pairs of magnets can be added or removed to equal the same number of brakes as the customer's trailer. Don't think it is moisture related as the error has occurred when we haven't seen rain for weeks. Problem: 2015 Silverado HD3500 DRW, with no trailer attached will show the error Service Trailer Brake System. Service Trailer Brake System – Meaning & Error Reset – Rx ">Service Trailer Brake System – Meaning & Error Reset – Rx. 2015-2016 Chevrolet Silverado, Suburban, Tahoe 2014 GMC Sierra 1500 2015-2016 GMC Sierra, Yukon Models With Integrated Trailer Brake System (RPO JL1) The following. How to Reset Service Brake System Light Silverado?. 2014 Silverado 2500hd lml A couple of days ago started displaying "service trailer brake system" on the DIC. 2016 Chevrolet Silverado 1500 Vehicle Tow Bar Brake System. Silverado Sierra "Service trailer brake system" Easy and cheap …. The trailer brake control system on the new body style trucks is compatible with two types of trailer brake systems: electromagnetic or electro-over hydraulic trailer brakes. To do this, locate the negative (-) and positive (+) terminals on the battery and use a wrench to loosen the terminal nuts. "Service Trailer Brake System" messege and ABS light. Service trailer brake system ">Troubleshooting Intermittent "Service trailer brake system. The following are the main components of the Cruise Control System: The accelerator pedal The stop lamp switch The body control module (BCM) The cruise control switches The engine control module (ECM) The throttle actuator control (TAC) motor The vehicle speed sensor (VSS) Cruise Control Engaged. Date: 19-Jan-2016 Subject: Diagnostic Tip - Service Trailer Brake Message With DTC U0415 Models: 2014 Chevrolet Silverado 1500 2015-2016 Chevrolet Silverado, Suburban, Tahoe 2014 GMC Sierra 1500 2015-2016 GMC Sierra, Yukon Models With Integrated Trailer Brake System (RPO JL1). The Silverado Service Trailer Brake System is designed so that the towing vehicle can travel smoothly while it tows a heavy load on its rear side. Please inspect the wiring from the Chassis Control Module to the trailer brake control switch, paying close attentionto these connectors for any backed out, loose, poor tension, etc. The Service Trailer Brake System message tells us that there’s been a disengagement of the trailer brake system because of wiring or other malfunction. The only light on is the brake light and service trailer system reads on the speedo. 2016 Silverado 1500 Technical Service Bulletins sort by date Return to top See all recalls for the Chevrolet Silverado 1500 See reliability data for the Chevrolet Silverado 1500 Chevrolet Silverado 1500 TSBs (Technical Service Bulletins) Some things are often misunderstood about recalls and technical service bulletins (TSBs). 22 Trailer Brake Controller Proportional Controller Electric Electric over Hydraulic Automatic Leveling Under-Dash Box Dash Mount Up to 4 Axles LCD Display Up to 360 Degrees Tekonsha more information >. Service Trailer Brake System – Meaning and Causes">Service Trailer Brake System – Meaning and Causes. Service Trailer Brake System?">Duramax: Why Does My Truck Say Service Trailer Brake System?. If the service brake system light on your Chevy Silverado truck comes on, don’t worry! There are a few things you can do to reset it. You need to remove the module then check the wiring between that module and the Chassis control module which is the travel brake controller. Today on our 2016 Chevrolet Silverado 1500, we're going to take a look at, and also show you how to install, the Tekonsha Primus IQ Proportional Trailer Brake Controller. Since the Trailer Brake Control Module is always monitoring the vehicle and trailer circuits/components, apoor connection at the 7-way connector can cause a "Check Trailer Wiring" message on the DIC. 5 3500 SRW cc lb LTZ HID Headlights 90watt hide a way strobe lights in the turn signals and reverse lights, Iron Bull Bumper with Piaa 550's, Piaa 510s hyper white with driving pattern, Piaa 510s amber with fog pattern, 4 Light Force 240's on the roof. Silverado Sierra "Service trailer brake system" Easy and cheap Fix. Trailer Brake Control Switch Assembly">GM Genuine Parts 15926102 Trailer Brake Control Switch Assembly. However, this trailer brake system is susceptible to wire. I…">2016 silverado 2500 trailer brake service alert comes on. The trailer brake control system on the new body style trucks is compatible with two types of trailer brake systems: electromagnetic orelectro-over hydraulic trailer brakes. Trailer Wiring Message and/or Service Trailer ">PIT5311D Check Trailer Wiring Message and/or Service Trailer. In the picture, 12 is the power control module and 1 is the chassis control module. 2014 Silverado 2500hd lml A couple of days ago started displaying "service trailer brake system" on the DIC. Dielectric Grease for Electrical Connectors, 2 oz. 2015 Silverado 2500 Trailer Brake Control Module Location. I opened the door, there is not corrosion or trash. The brake fluid level sensor data can be monitored using the Scan Tool (GDS2) under the EBCM Antilock Braking Data list parameter "Brake Fluid Level Sensor". There is no other wiring needed and the only other thing you would need in order to use it is a smartphone. The most common reason you might see a service trailer brake system message on your dashboard is due to a blown fuse, a bad brake light switch, or a bad. com / Cashapp - $cdarnau 2014 - 2018 GMC SIERRA,. Trailer Brake Service message comes up on my 2017 Silverado…. box there was the wiring harness for trailer brakes. what else? … read more Pete Automotive Diagnostic Spe General auto certifications 39,246 satisfied customers Service trailer brake system. 85K subscribers Subscribe 154 56K views 3 years ago GMC Sierra and Chevy Silverado 2014 and up Service trailer. The Service Trailer Brake System message tells us that there's been a disengagement of the trailer brake system because of wiring or other malfunction. My 2016 silverado did not come with the trailer brake switch but in the glove. Two days ago, with no trailer, I got "Service Trailer Brake System" at every start up. Checked fuses, tried a new controller mod and a new in dash controller. GM Genuine Parts 15926102 Trailer Brake Control Switch Assembly. These problems will trigger the 'service trailer brake system' warning message. - When applying the brake pedal at 0 mph (stopped) there will be no output from the truck's trailer brake system to the electro-over hydraulic pump motor. Fastest shipping available and a great price 2016 Chevrolet Silverado 1500 vehicle tow bar brake system. The following are the main components of the Cruise Control System: The accelerator pedal The stop lamp switch The body control module (BCM) The cruise control switches The engine control module (ECM) The throttle actuator control (TAC) motor The vehicle speed sensor (VSS) Cruise Control Engaged. The Chassis Control Module K38 (CCM) must determine which type of brakes the trailer is equipped with so the system can output correctly for the trailer's brake system. 2014 Silverado 2500hd lml A couple of days ago started displaying "service trailer brake system" on the DIC. Where is trailer brake relay on my 2016 chevy Silverado 2500 ,found trailer brake module , did they do away with it, hauling trailer service trailer brake system keeps coming on, also check trailer wiring popos up also figured Id change relay first any help would be greatly appreciated thanks asked by: Bob Helpful Expert Reply:. Trailer Brake Service message comes up on my 2017 Silverado 1500. 2016 Chevrolet Silverado 1500 Technical Service Bulletins (TSBs). GM Recalling Silverado, Sierra for Second Time for Brake-Failure Issue GM is updating a recall issued last December for the brake controls in 2019 Chevy Silverados, GMC Sierras, and some. "Service Trailer Brake System" - Chevy/GMC Suburban/Silverado/Sierra/Yukon/Tahoe Jimmy's Garage 7. This term means that you have a braking system for your trailer that is operated whenever you press the brake on your tow vehicle. this bulletin provides a service procedure to do an inspection and wire repair as needed on certain 2016 model year chevrolet silverado hd, silverado ld, gmc sierra hd and sierra ld vehicles. Silverado Trailer Brake Fuse It is easy to get confused when it comes to fuses. A vehicle’s trailer brake controller system is an OEM or aftermarket module or device installed on the vehicle to help the driver regulate the speed level of the trailer, as well as the stopping. PIT5311D Check Trailer Wiring Message and/or Service …. But check it before you replace it. Your Chevy Silverado brake monitoring system can detect the drastic drop in performance even if you ignore it, prompting you to service the brake system soon. Today, I had this message: "service trailer brake system". Mechanic's Assistant: What's the approximate mileage on your 2016. SERVICE TRAILER BRAKE FIX!!!! Chris Arnau 12. 2016 Silverado Trailer Braking System. This model of the truck has 3 different fuse boxes and they are in 3 different locations. 01/24/17. Going to do more digging and will update on what I learn. The Silverado Service Trailer Brake System is designed so that the towing vehicle can travel smoothly while it tows a heavy load on its rear side. The ACDelco GM Original Equipment Trailer Brake Control signals a trailer’s brake system when the driver presses on the brake pedal and adjusts how much braking power is needed to stop the trailer, and is a GM-recommended replacement for your vehicle's original components. I have changed switch assembly in dash, fuse looks good. I drove about 2-1/2 more hours. I 114,000 Chevy Mechanic: Pete, Auto Service Technician Category: Chevy Chevy Mechanic:. What else should I try? Thanks!. Silverado Sierra "Service trailer brake system" Easy and cheap Fix. 94 Accessories and Parts Trailer Wiring Wiring Dielectric Grease LubriMatic more information > Featured Help Information Miscellaneous Media LubriMatic Electrical Connector Dielectric Grease Review - Video. I've replaced the trailer brake control relay above the spare tire. "Service Trailer Brake System" FIXED! (at least for me). 173K views 10 months ago In this video I have a look at a 2011 Chevy 2500HD that has a message coming across the dash that says "Service Trailer Brake System" and I find it has a code P2534. See more Reply Save Like B boyne · #5 · Nov 24, 2013. Silverado Sierra "Service trailer brake system" Easy and cheap Fix. "the use of lci's sway command® with 2014-2020 gm trucks and suvs equipped with an integrated trailer brake control module (itbcm) could cause reduced braking effectiveness, induce loss of brake control and increase the risk of injury when towing a trailer. Edit - research shows that others experience this error with low battery - sluggish start. 85K subscribers Subscribe 154 56K views 3 years ago GMC Sierra and Chevy Silverado 2014 and up Service trailer. You can tell the brake fluid levels by checking the reservoir under the hood. The device is mounted on the dashboard at the driver's side of the tow vehicle. Since the Trailer Brake Control Module is always monitoring the vehicle and trailer circuits/components, apoor connection at the 7-way connector can cause a "Check Trailer Wiring" message on the DIC. A common cause of this (among many, many causes) that that the trailer brake relay is bad. 36K subscribers Subscribe 44K views 9 months ago Here's how to. Support My Channel! Paypal - Chris@arnau. The trailer brake control system on the new body style trucks is compatible with two types of trailer brake systems: electromagnetic orelectro-over hydraulic trailer brakes. SERVICE TRAILER BRAKE FIX!!!! Chris Arnau 12. Anyone ever get this error C1117 Service Trailer Brake? Google searches make it seem common. Shut the truck off, and started it back up. If you are receiving power to the brake signal wire at the vehicle's trailer connector while the manual override is engaged, the problem is more than likely on the trailer side. wTC5ZcJEvU-" referrerpolicy="origin" target="_blank">See full list on roadsumo. When the Chassis Control Module received the message that the brake fluid level was low, it sets DTC U0415 and commands the "Service Trailer Brake" message on. 3K 196K views 1 year ago This video shows how to correct the annoying "Service Trailer Brake System" message that randomly appears on your dash while driving. Where is trailer brake relay on my 2016 chevy Silverado 2500 ,found trailer brake module , did they do away with it, hauling trailer service trailer brake system keeps coming on, also check trailer wiring popos up also figured Id change relay first any help would be greatly appreciated thanks asked by: Bob Helpful Expert Reply:. Never did have that message come back. The device is mounted on the dashboard at the driver’s side of the tow vehicle. com / Cashapp - $cdarnau2014 - 2018 GMC SIERRA, CHEVROLET SILVERADO, SERVICE TRAILER BRAKE SYSTEM REPAIR. Complete 2016. 2016 silverado 2500 trailer brake service alert comes on. The ACDelco GM Original Equipment Trailer Brake Control signals a trailer’s brake system when the driver presses on the brake pedal and adjusts how much braking power is needed to stop the trailer, and is a GM-recommended replacement for your vehicle's original components. FIXED! "Service Trailer Brake System". However, this trailer brake system is susceptible to wire deterioration, binding, seizure, and corrosion. I would check every inch of wiring on the trailer and make sure grounds are all good. GM Recalling Silverado, Sierra for Second Time for Brake ">GM Recalling Silverado, Sierra for Second Time for Brake. Silverado Trailer Brake Fuse It is easy to get confused when it comes to fuses. "THE USE OF LCI’S SWAY COMMAND® WITH 2014-2020 GM TRUCKS AND SUVS EQUIPPED WITH AN INTEGRATED TRAILER BRAKE CONTROL MODULE (ITBCM) COULD CAUSE REDUCED. I drive an 2006, so I compared battery amperage while they both were sitting in driveway. Where is trailer brake relay on my 2016 chevy Silverado 2500 ,found trailer brake module , did they do away with it, hauling trailer service trailer brake system keeps coming on,. 14' Silverado 'Service Trailer Brake System' FIX kickpushcruise 222 subscribers Subscribe Share 81K views 3 years ago Are you getting a Service Trailer Brake System warning on your 14-18'. I… 114,000 Chevy Mechanic: Pete, Auto Service Technician Category: Chevy Chevy Mechanic: Pete This happens when I start a vehicle and I haven't had a trailer hooked up in over six months Chevy Mechanic: Ask Your Own Chevy Question Chevy Mechanic:. Lots of posts about this problem so search for other answers. This is a unique spot for it but it may not be the only one. The trailer brake control system on the new body style trucks is compatible with two types of trailer brake systems: electromagnetic or electro-over hydraulic trailer brakes. Don’t think it is moisture related as the error has occurred when we haven’t seen rain for weeks. com/_ylt=AwrNOLgY_mBkFZcpXn1XNyoA;_ylu=Y29sbwNiZjEEcG9zAzMEdnRpZAMEc2VjA3Ny/RV=2/RE=1684106905/RO=10/RU=https%3a%2f%2froadsumo. An easy way to do this is by disconnecting the car battery for at least 15 minutes. The Chassis Control Module K38 (CCM) must determine which type of brakes the trailer isequipped with so the system can output correctly for the trailer's brake system. Plus, it should have a number code for each one telling you what they are for. The Silverado Service Trailer Brake System is designed so that the towing vehicle can travel smoothly while it tows a heavy load on its rear side. PDF PIT5509D Diagnostic Tip. com%2fservice-trailer-brake-system%2f/RK=2/RS=5pZdmcH97klJ09Oi. Tekonsha Prodigy P3 Trailer Brake Controller - 1 to 4 Axles - Proportional (5424 reviews) Code: 90195 Retail: $199. Silverado - Service Trailer Brake System - No Trailer. Condition/Concern Recommendation/Instructions Warranty …. 2015 2500HD "check trailer wiring" and "service trailer brake. my batteries are one year old, here's are two years old. 2016 silverado 2500 trailer brake service alert comes on. No symptoms. See more Reply Save N nopassn · #4 · Jul 8, 2019. A vehicle’s trailer brake controller system is an OEM or aftermarket module or device installed on the vehicle to help the driver regulate the speed level of the trailer,. 1K 175K views 4 years ago Support My Channel! Paypal - Chris@arnau. Service Trailer Brake System Error Message on 2015 GMC Sierra. "Service Trailer Brake System" - Chevy/GMC Suburban/Silverado/Sierra/Yukon/Tahoe Jimmy's Garage 7. It is designed to accept electronic signals when you press on your truck’s brakes and activate the electronic braking system helping your trailer slow down. 2015 Silverado Trailer Brake Control Module Location (Guide). PIT5311D Check Trailer Wiring Message and/or Service Trailer Brake With DTC C1114 (Check Trailer Ground and/or 7-way Connector) Product Investigation. Silverado Sierra "Service trailer brake system" Easy and. 2016 Silverado 1500 Technical Service Bulletins sort by date Return to top See all recalls for the Chevrolet Silverado 1500 See reliability data for the Chevrolet Silverado 1500 Chevrolet Silverado 1500 TSBs (Technical Service Bulletins) Some things are often misunderstood about recalls and technical service bulletins (TSBs). Alternatively, if you fix the problem, you can force the control modules in your vehicle to reset and rescan the system. Make sure nothing is connected to the trailer brake power line in the 7 pin connector on your trailer. Since the Trailer Brake Control Module is always monitoring the vehicle and trailer circuits/components, apoor connection at the 7-way connector can cause a "Check Trailer Wiring" message on the DIC. Two days ago, with no trailer, I got "Service Trailer Brake System" at every start up. According to some owners, this key part is located under the spare tire and you may have to lift that tire up and out of the way. what else? Mechanic's Assistant: Have you had issues with the fuses before? Have you checked the vehicle's manual yet? No issues yet have not checked manual. Redarc Tow-Pro Elite Brake Controller - Dash Knob - 2 Braking Modes - 1 to 3 Axles - Proportional (1365 reviews) Code: RED44FR Retail: $257. The trailer being towed may not have an adequate power supply, thereby hindering the brake system. Silverado Sierra "Service trailer brake system" Easy and ">Silverado Sierra "Service trailer brake system" Easy and. I've checked connections, checked the plug. Silverado Sierra "Service trailer brake system" Easy and cheap Fix. trailer brake fuse? 07. The Chassis Control Module K38 (CCM) must determine which type of brakes the trailer is equipped with so the system can output correctly for. Asked by Cbfranks Jun 13, 2018 at 02:19 PM about the 2016 Chevrolet Silverado 1500 LT Z71 Crew Cab 4WD. If the service brake system light on your Chevy Silverado truck comes on, don’t worry! There are a few things you can do to reset it. Should just have 4 wires connected - left turn, right turn, tail-lights, and a ground. Silverado Sierra "Service trailer brake system" Easy and cheap Fix. Service trailer brake system keep truck from starting?">Service trailer brake system keep truck from starting?. Plug into computer to get codes and get a "not connecting" read. Disconnect the battery One way to reset the light is by disconnecting the battery. Service Trailer Brake System fix on a 2016 Chevy Silverado Cam Hart 31 subscribers Subscribe 75 Share 19K views 1 year ago GM Part #: 84108373 The notorious Service Trailer Brake System. The Service Trailer Brake System message tells us that there’s been a disengagement of the trailer brake system because of wiring or other malfunction. The Chassis Control Module K38 (CCM) must determine which type of brakes the trailer isequipped with so the system can output correctly for the trailer's brake system. I’ve checked connections, checked the plug. The first thing you will want to do is ensure all of the trailer brakes ground wires are securely attached to a bare metal surface on the trailers frame.