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Service bulletins for the 2015 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.

1818 on file from NHTSA, as of 2026-10-19.

About B0770 on the 2015 GMC Canyon: what the code means, and the bulletins and recalls about the same components.

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Only bulletins with trouble code: B0770 are shown. Show all

Bulletins, newest first
PIP5256A2018-01-22. Service bulletin. ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about vehicles that may have a Service 4WD message displayed in the Instrument Panel Cluster. Technician may find diagnostic trouble code B2725 or B0770 in the Transfer Case Control Module. Technician will need to replace the Transfer Case Select switch with the correct switch.
PIP5256B2017-08-15. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). This Preliminary Information communication provides information to the technician about vehicles that may have a Service 4WD message displayed in the Instrument Panel Cluster. Technician may find diagnostic trouble code B2725 or B0770 in the Transfer Case Control Module. Technician will need to replace the Transfer Case Select switch with the correct switch.
PIP52562017-08-15. Service bulletin. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This Preliminary Information communication provides information to the technician about vehicles that may have a Service 4WD message displayed in the Instrument Panel Cluster. Technician may find diagnostic trouble code B2725 or B0770 in the Transfer Case Control Module. Technician will need to replace the Transfer Case Select switch with the correct switch.
PIP52562017-03-15. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT VEHICLES THAT MAY HAVE A SERVICE 4WD MESSAGE DISPLAYED IN THE INSTRUMENT PANEL CLUSTER. TECHNICIAN MAY FIND DIAGNOSTIC TROUBLE CODE B2725 OR B0770 IN THE TRANSFER CASE CONTROL MODULE. TECHNICIAN WILL NEED TO REPLACE THE TRANSFER CASE SELECT SWITCH WITH THE CORRECT SWITCH.

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