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Service bulletins for the 2020 GMC Terrain

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.

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

By type

By component

By trouble code

By topic

Only bulletins with component: Equipment and accessories are shown. Show all

Bulletins, newest first
PIE0588B2021-03-08. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to multiple DTC?s set after a battery discharge, jump start and/or battery replacement.
030846004X2021-03-08. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This service bulletin announces that the Part Restriction and Ordering Process Information for OnStar® Vehicle Communication Interface Modules (VCIM) (GMNA Only) has ended.
21NA0262021-03-08. Service bulletin. EQUIPMENT; STRUCTURE; EQUIPMENT ADAPTIVE/MOBILITY. This service bulletin provides information for dealers/technicians on accessory all-weather floor liners and flat mats warped or misshapen.
21NA0132021-03-01. Service bulletin. STRUCTURE:BODY:ROOF AND PILLARS; EQUIPMENT. This technical bulletin provides repair information to correct a customer concern of a rattle or ticking noise heard coming from B-Pillar area.
21NA0092021-03-01. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). This technical bulletin provides repair information to correct a customer concern of Navigation System Arrival Time Are incorrect for Certain Locations.
20NA1102021-03-01. Service bulletin. FUEL SYSTEM, DIESEL; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT. This informational bulletin advises the technician on what to do if the DEF pump has been replaced and perform a leak test to prime the pump.
040089015V2021-03-01. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin provides information on Warranty Administration ? Required Operating Procedures - 8 Points (U.S. Only).
010601011L2021-03-01. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION; EQUIPMENT. This informational bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
20NA2352021-02-22. Service bulletin. EQUIPMENT:APPLIANCE:TV/RADIO/SPEAKERS. This service bulletin provides information to aid a dealer/customer concern of Radio Unwanted Phantom Touch or Non-Responsive to Touch After Cleaning/Disinfecting Radio Display.
18NA3062021-02-22. Service bulletin. EQUIPMENT. This Warranty Administration bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA).
040089015V2021-02-01. Service bulletin. EQUIPMENT. This bulletin provides information on Warranty Administration ? Required Operating Procedures - 8 Points (U.S. Only).
010601011L2021-02-01. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT. This informational bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
18NA3062021-02-01. Service bulletin. EQUIPMENT. This Warranty Administration bulletin provides information for dealers/Service advisors on when and how to submit a Pre-Repair Authorization (PRA).
PIT5790A2021-01-25. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This Preliminary information communicates a concern where the radio will reboot when adjusting the volume intermittently and that engineering is investigating
990851001E2020-12-21. Service bulletin. EQUIPMENT; STRUCTURE. Thins informational bulletin provides information on Paint-less Dent Repair Process.
000310002L2020-12-21. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; WHEELS. This service bulletin provides information on Chemical Staining, Pitting, Corrosion and/or Spotted Appearance of Chromed Aluminum Wheels.
19NA0762020-12-21. Service bulletin. VISIBILITY; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; POWER TRAIN. This technical bulletin provides repair information to correct a customer concern of Blue or Black Screen and Service Rear Vision System Message on Radio Display Shifting into Reverse.
19NA0552020-12-21. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM. This technical bulletin provides repair information to correct a customer concern of a accessory front floor liner warped, bent inward.
18NA2632020-12-21. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This warranty administration bulletin provide policy information for variable diagnostic time allowances on select labor operations (U.S. Only).
PIT57942020-12-14. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This Preliminary information communicates a concern where the wrong part number was being installed causing XM and Audio concerns. This PI explains the concern and advises to return the part to the ESC for the correct part if the incorrect part number is received
PIT57902020-12-14. Service bulletin. EQUIPMENT:APPLIANCE:TV/RADIO/SPEAKERS; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This Preliminary information communicates a concern where the radio will reboot when adjusting the volume intermittently and that engineering is investigating
1308116001F2020-12-07. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION. The intent of this technical bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them.
060089026Q2020-12-07. Service bulletin. EQUIPMENT. This warranty administration bulletin provides information on Warranty Administration - Customer Concern Not Duplicated (CCND) Labor Operation Numbers.
20NA2132020-11-30. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; ENGINE AND ENGINE COOLING. This service bulletin provides information on Improved Oil Filter Gasket Design for Spin-On Oil Filters PF63, PF64 and PF48.
19NA2372020-11-30. Service bulletin. FUEL SYSTEM, DIESEL; EQUIPMENT. This informational bulletin explains how to identify possible DEF contamination.

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