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Service bulletins for the 2020 GMC Canyon

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.

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

By type

By component

By trouble code

By topic

Bulletins, newest first
20NA0122020-05-26. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This Technical bulletin provides service procedure information for dealers/technicians on Radio Software Version V135116 Over-the-Air Update.
PIP5257D2020-05-11. Service bulletin. ENGINE AND ENGINE COOLING. This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that may have oil mixed in with the engine coolant. Technician will need to inspect the oil cooler if equipped for possible leaking into the cooling system through the radiator. If no issue found replace the engine as well as all rubber coolant hoses. Also updated to include ALL HFV6 engines Gen1 and Gen2.
PIT5516D2020-05-11. Service bulletin. EXTERIOR LIGHTING. This Preliminary Information communicates the steps on diagnosing the concern of the accessory off road lamps are inoperative after installation.
PIT5516C2020-05-11. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS; ELECTRICAL SYSTEM. This Preliminary Information communicates the steps on diagnosing the concern of the accessory off road lamps are inoperative after installation.
PIE05582020-05-04. Service bulletin. BACK OVER PREVENTION. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards a loud bang and/or grinding type noise heard coming from the rear axle area.
PIE0538B2020-05-04. Service bulletin. POWER TRAIN. This engineering information (EI) ends the need for information from the field regarding 8 speed transmission shift quality.
990089019S2020-04-27. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This warranty administration bulletin provides information on Global Warranty Management (GWM) Warranty Parts Center (WPC) Parts Return Program Information.
100089005I2020-04-27. Service bulletin. EQUIPMENT:ELECTRICAL. This warranty administration bulletin explains to the technician that when using wiring repair labor operations, additional information may be needed when submitting Global Warranty transactions when doing wiring repairs.
070089037O2020-04-27. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This warranty administration bulletin provides policy information for courtesy transportation and roadside assistance programs.
060089029P2020-04-27. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This informational bulletin provides information on interior cleaning products and what is offered to clean the interiors of GM vehicles.
060089026P2020-04-27. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This warranty administration bulletin provides information on Warranty Administration ? Customer Concern Not Duplicated (CCND) Labor Operation Numbers.
050310020G2020-04-27. Service bulletin. TIRES. This informational bulletin provides information for dealers/technicians on Use of Nitrogen Gas in Tires.
020089002S2020-04-27. Service bulletin. EQUIPMENT. This informational bulletin provides information for dealers/technicians on When and How to Submit a Field Product Report (FPR) (U.S. Dealers Only).
20NA0122020-04-27. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM:SOFTWARE. This Technical bulletin provides service procedure information for dealers/technicians on Radio Software Version V135116 Over-the-Air Update.
20NA0622020-04-27. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. This technical bulletin provides a procedure to replace the center support housing and low reverse piston seal if found the cause of reverse issues.
N1922734502020-04-20. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. Emission - General Motors has decided to conduct a voluntary emissions recall involving certain 2020 Chevrolet Colorado and GMC Canyon vehicles equipped with a performance air intake system. The correct California Air Resources Board (CARB) Executive Order (EO) emissions label may not have been installed. Dealers are to install a new Executive Order (EO) emissions label. Since a new label can be easily installed, and to reduce customer inconvenience, the label will be sent directly to customers of record along with the installation instructions. Customers may install the label or, if they desire, they may take the label to their dealer for installation at no charge.
PIT5509F2020-04-13. Service bulletin. ELECTRICAL SYSTEM; SERVICE BRAKES, ELECTRIC. 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.
PIT5396D2020-04-13. Service bulletin. SERVICE BRAKES, HYDRAULIC. This Preliminary Information communication provides information to the technician that some vehicle may have a water leak into the cabin. Water staining may be seen in the headliner or water may be on the floor. Technician will inspect these areas for water intrusion roof ditch, rear glass, center high mounted stop light, windshield, cowl seam, heater-vent-air conditioning drain tube, pillar area, and the pressure relief valve.
PIT5696D2020-04-13. Service bulletin. SERVICE BRAKES; ELECTRICAL SYSTEM. This preliminary information discusses potential for a code C0010.5A to store in the brake controller which appears to be setting falsely or is induced by the customer.
PIT5516C2020-04-13. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This Preliminary Information communicates the steps on diagnosing the concern of the accessory off road lamps are inoperative after installation.
PIP5700B2020-04-13. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. This Preliminary information communicates to the dealer technician that the part numbers for the internal wiring harnesses for the 8 speed RWD transmissions are not listed in the Electronic Parts Catalog. Technicians are to refer to the information provided in this document to obtain the internal wiring harness part numbers by application.
150089005C2020-04-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT ADAPTIVE/MOBILITY. This Warranty Administration bulletin provides information on Essential Tools that include Consumable Parts (U.S. Only).
050307009J2020-04-06. Service bulletin. EQUIPMENT; WHEELS. This informational bulletin provides information on Wheel Alignment Specifications, Requirements and Recommendations for GM Vehicles.
040601029J2020-04-06. Service bulletin. ENGINE; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. This informational bulletin explains Unscheduled Supplemental Services (including Flushing Services and Additives) and the Proper use of GM Simplified Maintenance Schedules.
040089015U2020-04-06. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin provides information on Warranty Administration ? Required Operating Procedures - 8 Points (U.S. Only).

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