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Service bulletins for the 2012 GMC Sierra

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.

2268 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Bulletins, newest first
120310001A2023-12-04. Service bulletin. SUSPENSION: ADJUSTMENT:MANUAL; SUSPENSION; WHEELS; TIRES:BEAD. Vibration Shortly After Tires are Mounted/Preventing Vibration from Wheel Slip
120232002A2023-12-04. Service bulletin. POWER TRAIN; BACK OVER PREVENTION; STEERING:HYDRAULIC POWER ASSIST:POWER STEERING FLUID; STEERING; STEERING:HYDRAULIC POWER ASSIST:HOSE, PIPING, AND CONNECTIONS; STEERING:HYDRAULIC POWER ASSIST:PUMP; SERVICE BRAKES. Power Steering Noise or Fluid Leak from Power Steering Pump, Gear or High Pressure Pressure Hose During Extreme Low Temperature Operation (Replace Power Steering Fluid)
120232001A2023-12-04. Service bulletin. FUEL SYSTEM, GASOLINE; STEERING; POWER TRAIN; STEERING:HYDRAULIC POWER ASSIST SYSTEM; POWER TRAIN:DRIVELINE:HYDRAULIC:HOSES AND FITTINGS. Hydraulic Power Steering Leak at Hose Connection to Steering Rack
120089002A2023-12-04. Service bulletin. ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:IMMOBILIZER/PROXIMITY:KEY/SENDER; EQUIPMENT. Requesting a New Key Code for Customer with Lost or Stolen Keys
110139005A2023-12-04. Service bulletin. STRUCTURE. Reduced Heater Performance with Winter Grille Cover Installed
110090001B2023-12-04. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Global Information for GM dexos 1? and dexos 2?, Engine Oil Specifications
110090001A2023-12-04. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Global Information for GM dexos 1? and dexos 2?, Engine Oil Specifications
110089005H2023-12-04. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. dealer Empowerment Labor Operations and Customer Enthusiam
110089005F2023-12-04. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Enable and Empower Project
110089005E2023-12-04. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin is being revised to add additional Mandatory Minimum Tables and additional information concerning Policy decision making. Please discard Corporate Bulletin Number 11-00-89-005D (Section 00 ? General Information).
03-00-91-001I2023-11-22. Service bulletin. WHEELS; POWER TRAIN; STEERING; SUSPENSION; ENGINE AND ENGINE COOLING. This service bulletin provides a vibration analysis worksheet the technician can use in conjunction with the appropriate Vibration Analysis-Road testing procedure when diagnosing vibration concerns.
PIT5059B2023-11-20. Service bulletin. EQUIPMENT. Roof Beacon Inoperative.
PIT5052D2023-11-20. Service bulletin. STEERING. Steering Wheel Vibration Or Customers Looking To Add Steering Stabilizer.
PIT5049A2023-11-20. Service bulletin. SUSPENSION. Rattle Squeak Clunk Bump Noise From Front Suspension.
PIT5039C2023-11-20. Service bulletin. ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SOFTWARE; ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SENSORS. Removing / Disabling Rear Park Assist RPO UD7.
PIT4911S2023-11-20. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); EQUIPMENT:ELECTRICAL:INFOTAINMENT; EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE. Navigation Radio Radio And Integrated Center Stack
PIT4853D2023-11-20. Service bulletin. ELECTRICAL SYSTEM:PROPULSION SYSTEM:HYBRID MANAGEMENT:POWER CONTROL UNIT/MODULE (HPCU); ELECTRICAL SYSTEM:PROPULSION SYSTEM:HYBRID MANAGEMENT. Hybrid No Crank or Loss of High Speed Communications.
PIT4844E2023-11-20. Service bulletin. VEHICLE SPEED CONTROL:CRUISE CONTROL. Adding Cruise Control (RPO K34)
PIT4821D2023-11-20. Service bulletin. ELECTRICAL SYSTEM. High Voltage 2-Mode Battery Parts Restriction-TAC
PIT4821C2023-11-20. Service bulletin. ELECTRICAL SYSTEM. High Voltage 2-Mode Battery Parts Restriction-TAC.
PIT4816E2023-11-20. Service bulletin. ELECTRICAL SYSTEM. Diagnosing / Troubleshooting Multiple Electrical Concerns / Intermittent No Crank
PIT4813F2023-11-20. Service bulletin. ELECTRICAL SYSTEM. Service Charging System Message Or Low Volt Gauge Reading After Cold Start.
PIT4813E2023-11-20. Service bulletin. ELECTRICAL SYSTEM. Service Charging System Message Or Low Volt Gauge Reading After Cold Start
PIT4729E2023-11-20. Service bulletin. SERVICE BRAKES; TRAILER HITCHES. Adding Integrated Trailer Brake Controller RPO JL1.
PIT4605D2023-11-20. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. Cold Air Leak On Passenger Floor.

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