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Service bulletins for the 2015 Chevrolet Colorado

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

1826 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Trailer hitch are shown. Show all

Bulletins, newest first
PIT53242024-01-08. Service bulletin. TRAILER HITCHES; ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL. Adding An Aftermarket Trailer Brake Controller.
PIT5509K2023-06-13. Service bulletin. AIR BAGS; ELECTRICAL SYSTEM; TRAILER HITCHES. This Preliminary Information communication provides information to the technician on how to diagnose and repair vehicle that may have a "Check Trailer Wiring" or "Service Trailer Brake System? message on the Driver Information Center when a trailer is connected to the vehicle. Diagnostic Trouble Code C1114 set in the Chassis Control Module. Chassis Control Module has to determine the type of trailer brake system that is being used. The Chassis Control Module can be sensitive to a variety of trailer wiring issues. The technician will need to make a trailer tester using Electric Trailer Brake Magnets and 7-way trailer connector to determine if it is a vehicle or trailer issue. If the concern is not duplicated with the tester installed, the vehicle is operating correctly and the focus should be on the trailer wiring or 7 way connector.
PIT5509J2023-05-15. Service bulletin. ELECTRICAL SYSTEM; TRAILER HITCHES. This Preliminary Information communication provides information to the technician on how to diagnose and repair vehicle that may have a "Check Trailer Wiring" or "Service Trailer Brake System? message on the Driver Information Center when a trailer is connected to the vehicle. Diagnostic Trouble Code C1114 set in the Chassis Control Module. Chassis Control Module has to determine the type of trailer brake system that is being used. The Chassis Control Module can be sensitive to a variety of trailer wiring issues. The technician will need to make a trailer tester using Electric Trailer Brake Magnets and 7-way trailer connector to determine if it is a vehicle or trailer issue. If the concern is not duplicated with the tester installed, the vehicle is operating correctly and the focus should be on the trailer wiring or 7 way connector.
PIT5324E2022-02-14. Service bulletin. TRAILER HITCHES; EQUIPMENT. This Preliminary Information communication provides information to the technician about installing an aftermarket Trailer Brake Controller. Technician will find that that vehicle is not equipped with Trailering Package Regular Production Option Code Z82, there are also blunt cut wires at the spare tire for the trailer connector. Technician will install the aftermarket Trailer Brake Controller to the blunt wires behind the lefts side kick panel. Technician will install the trailer connector to the blunt wires under the vehicles near the spare tire.
PIT5509H2021-09-13. Service bulletin. AIR BAGS; TRAILER HITCHES; ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician on how to diagnose and repair vehicle that may have a "Check Trailer Wiring" or "Service Trailer Brake System? message on the Driver Information Center when a trailer is connected to the vehicle. Diagnostic Trouble Code C1114 set in the Chassis Control Module. Chassis Control Module has to determine the type of trailer brake system that is being used. The Chassis Control Module can be sensitive to a variety of trailer wiring issues. The technician will need to make a trailer tester using Electric Trailer Brake Magnets and 7-way trailer connector to determine if it is a vehicle or trailer issue. If the concern is not duplicated with the tester installed, the vehicle is operating correctly and the focus should be on the trailer wiring or 7 way connector.
PIT5499B2020-06-15. Service bulletin. EXTERIOR LIGHTING; ELECTRICAL SYSTEM; AIR BAGS; TRAILER HITCHES. This Preliminary Information communication provides information to the technician that vehicles may have an Antilock Braking System or Malfunction Indicator Lamp illuminated. Also Low Brake Fluid lamp on with the master cylinder fluid level is full or a Service Trailer Brake message on the Driver Information Center. Technician may find codes C0035, C0040, C0045, C0050, C0055, C0267, U0121, U0415 or U0420. Technician will need to inspect the Electronic Brake Control Module connector for water intrusion or corrosion on the terminals. If either is found, replace the EBCM and replace the affected terminals. Also remove the tape from the conduit leading to G400 between the main harness and the ground lug.
PIT5324C2019-10-15. Service bulletin. ELECTRICAL SYSTEM; TRAILER HITCHES. This Preliminary Information communication provides information to the technician about installing an aftermarket Trailer Brake Controller. Technician will find that that vehicle is not equipped with Trailering Package Regular Production Option Code Z82, there are also blunt cut wires at the spare tire for the trailer connector. Technician will install the aftermarket Trailer Brake Controller to the blunt wires behind the lefts side kick panel. Technician will install the trailer connector to the blunt wires under the vehicles near the spare tire.
PIT53242017-08-15. Service bulletin. TRAILER HITCHES; ELECTRICAL SYSTEM:WIRING. This Preliminary Information communication provides information to the technician about installing an aftermarket Trailer Brake Controller. Technician will find that that vehicle is not equipped with Trailering Package Regular Production Option Code Z82, there are also blunt cut wires at the spare tire for the trailer connector. Technician will install the aftermarket Trailer Brake Controller to the blunt wires behind the lefts side kick panel. Technician will install the trailer connector to the blunt wires under the vehicles near the spare tire.
27620 BULLETIN2017-01-23. Service bulletin. EQUIPMENT; TRAILER HITCHES. 27620 - CUSTOMER SATISFACTION PROGRAM. GENERAL MOTORS IS RELEASING CUSTOMER SATISFACTION PROGRAM 27620 TODAY. SOME VEHICLES EQUIPPED WITH HEAVY-DUTY TRAILERING PACKAGE, WHICH INCLUDES A TRAILER HITCH RATED AT 7,000 LB, MAY HAVE BEEN BUILT WITH A 3,500 LB TRAILER HITCH. IF A 3,500 LB TRAILER HITCH IS USED TO TOW MORE THAN 3,500 LB, CRACKS COULD DEVELOP AT THE HITCH. OVER TIME THESE CRACKS COULD POTENTIALLY SPREAD AND FATIGUE THE HITCH. IF THE VEHICLE IS BEING OPERATED WITH A TRAILERED LOAD, A FATIGUED TRAILER HITCH COULD ALLOW THE TRAILER TO SEPARATE FROM THE TOW VEHICLE. DEALERS WILL INSPECT FOR THE PRESENCE OF THE HEAVY-DUTY TRAILER HITCH AND, IF NECESSARY, INSTALL A NEW HITCH.
276212017-01-23. Service bulletin. TRAILER HITCHES; EQUIPMENT. 27621 - CUSTOMER ADVISORY LETTER MAILING. LETTER MAILING TO OWNERS ADVISING THAT THE VEHICLE MAY HAVE BEEN BUILT WITH A HEAVY-DUTY TRAILER HITCH RATED AT 7,000 LB INSTEAD OF THE 3,500 LB TRAILERING PACKAGE VEHICLE BUILD SPECIFICATION. IF THE VEHICLE WAS BUILT WITH A 7,000 LB TRAILER HITCH, IT IS STILL LIMITED TO A MAXIMUM TRAILER WEIGHT OF 3,500 LB. TOWING A TRAILER WHOSE WEIGHT IS MORE THAN 3,500 LB COULD AFFECT POWERTRAIN COOLING, POTENTIALLY RESULTING IN AN OVERHEAT CONDITION OR COULD CHANGE THE WAY THE VEHICLE HANDLES.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.