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Service bulletins for the 2017 GMC Yukon

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.

1580 on file from NHTSA, as of 2026-10-19.

About U0078 on the 2017 GMC Yukon: what the code means, and the bulletins and recalls about the same components.

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Only bulletins with trouble code: U0078 are shown. Show all

Bulletins, newest first
PIT5586G2020-12-14. Service bulletin. ELECTRICAL SYSTEM; SUSPENSION; STEERING. This Preliminary information communicates a customer concern of IPC gauges inoperative or fluctuate, No Start, No Crank, SIR Light / Service Airbag Message, Service Suspension Message, Radio display blank, Steering Wheel Controls (SWC) not illuminated, Turn Signal no audible feedback, HVAC controls inoperative. During diagnostics a technician may find any of the following DTC's: B1011, B1370, B3980, U0020, U0029, U007D, U0073, U0078, U0100, U0101, U0102, U0104, U0140, U0151, U0155, U0164, U0184, U0186, U0198, U0422. Dealer is instructed to check for logic lock of Serial Data Gateway Module or for Serial Data Gateway Module X1 and X2 connectors having terminal concerns and repair as needed.
PIT5586F2020-12-14. Service bulletin. ELECTRICAL SYSTEM; ENGINE; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. This Preliminary information communicates a customer concern of IPC gauges inoperative or fluctuate, No Start, No Crank, SIR Light / Service Airbag Message, Service Suspension Message, Radio display blank, Steering Wheel Controls (SWC) not illuminated, Turn Signal no audible feedback, HVAC controls inoperative. During diagnostics a technician may find any of the following DTC's: B1011, B1370, B3980, U0020, U0029, U007D, U0073, U0078, U0100, U0101, U0102, U0104, U0140, U0151, U0155, U0164, U0184, U0186, U0198, U0422. Dealer is instructed to check for logic lock of Serial Data Gateway Module or for Serial Data Gateway Module X1 and X2 connectors having terminal concerns and repair as needed.
PIT5586E2020-11-16. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates a customer concern of IPC gauges inoperative or fluctuate, No Start, No Crank, SIR Light / Service Airbag Message, Service Suspension Message, Radio display blank, Steering Wheel Controls (SWC) not illuminated, Turn Signal no audible feedback, HVAC controls inoperative. During diagnostics a technician may find any of the following DTC's: B1011, B1370, B3980, U0020, U0029, U007D, U0073, U0078, U0100, U0101, U0102, U0104, U0140, U0151, U0155, U0164, U0184, U0186, U0198, U0422. Dealer is instructed to check for logic lock of Serial Data Gateway Module or for Serial Data Gateway Module X1 and X2 connectors having terminal concerns and repair as needed.
PIT5586D2020-04-13. Service bulletin. ELECTRICAL SYSTEM. This Preliminary information communicates a customer concern of IPC gauges inoperative or fluctuate, No Start, No Crank, SIR Light / Service Airbag Message, Service Suspension Message, Radio display blank, Steering Wheel Controls (SWC) not illuminated, Turn Signal no audible feedback, HVAC controls inoperative. During diagnostics a technician may find any of the following DTC's: B1011, B1370, B3980, U0020, U0029, U007D, U0073, U0078, U0100, U0101, U0102, U0104, U0140, U0151, U0155, U0164, U0184, U0186, U0198, U0422. Dealer is instructed to check Serial Data Gateway Module X2 connector for terminal concerns and repair as needed.
PIT5586C2019-07-08. Service bulletin. EQUIPMENT:ELECTRICAL. This Preliminary information communicates a customer concern of IPC gauges inoperative or fluctuate, No Start, No Crank, SIR Light / Service Airbag Message, Service Suspension Message, Radio display blank, Steering Wheel Controls (SWC) not illuminated, Turn Signal no audible feedback, HVAC controls inoperative. During diagnostics a technician may find any of the following DTC's: B1011, B1370, B3980, U0020, U0029, U007D, U0073, U0078, U0100, U0101, U0102, U0104, U0140, U0151, U0155, U0164, U0184, U0186, U0198, U0422. Dealer is instructed to check Serial Data Gateway Module X2 connector for terminal concerns and repair as needed.
PIT5586B2018-09-17. Service bulletin. EQUIPMENT; ENGINE; EQUIPMENT ADAPTIVE/MOBILITY. This Preliminary information communicates a customer concern ofIPC gauges inoperative or fluctuate, No Start,No Crank,SIR Light / Service Airbag Message, Service Suspension Message,Radio display blank, Steering Wheel Controls (SWC) not illuminated, Turn Signal no audible feedback,HVAC controls inoperative. During diagnostics a technician may find any of the following DTC's: B1011, B1370, B3980, U0020, U0029, U007D, U0073, U0078, U0100, U0101, U0102, U0104, U0140, U0151, U0155, U0164,U0184, U0186, U0198, U0422. Dealer is instructed to check Serial Data Gateway Module X2 connector for terminal concerns and repair as needed.
PIT5586A2018-05-21. Service bulletin. STEERING; SUSPENSION; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; ENGINE. This Preliminary information communicates a customer concern ofIPC gauges inoperative or fluctuate, No Start,No Crank,SIR Light / Service Airbag Message, Service Suspension Message,Radio display blank, Steering Wheel Controls (SWC) not illuminated, Turn Signal no audible feedback,HVAC controls inoperative. During diagnostics a technician may find any of the following DTC's: B1011, B1370, B3980, U0020, U0029, U007D, U0073, U0078, U0100, U0101, U0102, U0104, U0140, U0151, U0155, U0164,U0184, U0186, U0198, U0422. Dealer is instructed to check Serial Data Gateway Module X2 connector for terminal concerns and repair as needed.
PIT55862017-11-14. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This Preliminary information communicates a customer concern ofIPC gauges inoperative or fluctuate, No Start,No Crank,SIR Light / Service Airbag Message, Service Suspension Message,Radio display blank, Steering Wheel Controls (SWC) not illuminated, Turn Signal no audible feedback,HVAC controls inoperative. During diagnostics a technician may find any of the following DTC's: B1011, B1370, B3980, U0020, U0029, U007D, U0073, U0078, U0100, U0101, U0102, U0104, U0140, U0151, U0155, U0164,U0184, U0186, U0198, U0422. Dealer is instructed to check Serial Data Gateway Module X2 connector for terminal concerns and repair as needed.
PIT5405C2017-08-15. Service bulletin. ELECTRICAL SYSTEM; STEERING:ELECTRIC POWER ASSIST SYSTEM; STEERING:HYDRAULIC POWER ASSIST SYSTEM. This Preliminary Information communication provides information to the technician about vehicles that have a reduced or loss of power steering assist, steering wheel jerks or kicks back when turning, Service Stabilitrak message with warning chime, engine stall, Instrument Panel Cluster going blank or inoperative, radio/Integrated Center Stack going blank, Heater-Vent-Air Conditioning going blank, hood ajar message and/or dome lamps flash when shifting into reverse, alarm sounds when locking doors or door locks cycling, and or wipers continue to run for a short time after turning off and then stop/park in the incorrect location. Technician may find Diagnostic Trouble Codes U0073, U0078, U0029, U0028, U0415, U0140, U0126, U0121, U0101, U0100, C0544, C0710, U1510, B127B, B2605, B3600, C0800, U0428, U0452, U0131, and P0513 set in the vehicle. Check the body control module ground at the G218 location. The front dash insulator mat may be trapped between the ground eyelet and the body stud. Remove the round nut and eyelet and cut the front dash insulator mat away from the ground stud so it no longer interferes with the ground stud and reinstall the eyelet and ground nut. Technician will also inspect the starter solenoid battery cable for shorting out on the starter heat shield. Technician will need to voltage drop the battery cables. The battery should be tested using the GR8. X183 or X133 should be inspected for any broken/loose/backed out terminals.

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