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Service bulletins for the 2012 Chevrolet Avalanche

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.

1612 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Steering are shown. Show all

Bulletins, newest first
PI0534B2018-04-23. Service bulletin. STEERING:HYDRAULIC POWER ASSIST:PUMP. This preliminary information bulletin provides a procedure to eliminate a whine noise that varies with engine speeds.
12-02-32-002A2018-04-23. Service bulletin. STEERING:HYDRAULIC POWER ASSIST:POWER STEERING FLUID; STEERING. This technical bulletin provides a revision for 12-02-32-002 to add the 2013-2014 model years, add noise as a possible condition and add a Note in the Instructions section.
13-02-32-001A2018-04-23. Service bulletin. STEERING:HYDRAULIC POWER ASSIST SYSTEM; STEERING:HYDRAULIC POWER ASSIST:POWER STEERING FLUID. This technical bulletin provides a revision for 13-02-32-001 to update the models information.
16-NA-1092017-08-31. Service bulletin. STEERING. This technical bulletin provides a procedure inspecting for excess grease or Sealant on the Exterior of the steering gear due to seeing grease or sealant on certain locations on the gear.
PIC3278G2017-08-15. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; STEERING. This Preliminary Information communication provides information to the technician the steps needed to diagnose and repair the vehicles that may have unwanted or phantom phone calls. Technician will need to determine what type of call the customer is having that is unwanted. The vehicle may receive an incoming call just like any other phone. Typically the customer will hear the phone ringing in the vehicle. This scenario also includes incoming Bluetooth calls. One type of unwanted call can be made if the key pad is faulty the OnStar system will try to make a blue button call for shorted voltage in the circuits. The OnStar module could have an internal fault and produce a ″Phone Unavailable″ audio message also it may have a Diagnostic Trouble Code U1500 or B1000. Refer to diagnostics for the Diagnostic Trouble Code making sure to follow any applicable Bulletins or Preliminary Information sheets. A “Ready” or “OnStar ready” audio message heard while driving. In some cases it has been found that the customer is inadvertently pressing the ″push to talk″ button on the steering wheel controls. On rare occasions, other issues in the steering column or Steering Wheel Control system may induce this concern.
PIP4404E2017-08-15. Service bulletin. STEERING:LINKAGES:ARM:IDLER AND ATTACHMENT. This Preliminary Information communication provides information to the technician vehicles with a slight rough idle. Technician should compare the concern with a like vehicle. If the concern is worse than a like vehicle, technician should follow published Service Information diagnosis and repair as necessary.
PIT4208D2017-08-15. Service bulletin. SERVICE BRAKES, HYDRAULIC:POWER ASSIST; STEERING:HYDRAULIC POWER ASSIST:POWER STEERING FLUID. This Preliminary Information communication provides information to the technician about vehicles that may have a power steering pump whine noise. Technician will need to flush and refill the power steering system with Lucas Power Steering Fluid with Conditioners. Technician will replace the power steering pump with the latest design if the fluid is not available.
PIT5184A2017-08-15. Service bulletin. STEERING: STEERING WHEEL/HANDLE BAR; ELECTRICAL SYSTEM:WIRING; ELECTRICAL SYSTEM. This Preliminary Information communication provides information to the technician about vehicles that have an instrument panel backlighting flashes, flickers or inoperative, unwanted horn activation, radio controls inoperative or unwanted activation, OnStar unwanted activation, and cruise control inoperative. Technician should inspect for a short to ground on the steering wheel near the Supplemental Inflatable Restraint coil connector X2 and make necessary repairs to any shorted circuits and then position the wiring.
PI0639C2017-08-15. Service bulletin. STEERING; STEERING:ELECTRIC POWER ASSIST SYSTEM. This preliminary informational bulletin provides a procedure to apply dielectric grease and a piece of adhesive shim stock to the steering angle sensor connector to correct a condition of service stabilitak message displayed in DIC and DTC C0455 or C0710
13-02-32-001D2017-08-15. Service bulletin. STEERING:HYDRAULIC POWER ASSIST SYSTEM. This technical bulletin provides a procedure to flush and bleed the power steering system to correct a condition of power steering noise or fluid leak from power steering pump, gear or high pressure hose during extreme low temperature conditions.
SB-16-NA-1092016-08-06. Service bulletin. STEERING:ELECTRIC POWER ASSIST SYSTEM. "THIS TECHNICAL BULLETIN PROVIDES A PROCEDURE TO INSPECT THE STEERING GEAR FOR A NORMAL CONDITION OF GREASE OR SEALANT ON EXTERIOR CASE OF GEAR DUE TO THE MANUFACTURING PROCESS."
SB-07-02-32-002N2013-11-29. Service bulletin. STEERING:HYDRAULIC POWER ASSIST SYSTEM; STEERING:HYDRAULIC POWER ASSIST:POWER STEERING FLUID. BUICK/CADILLAC/CHEVROLET/GMC/PONTIAC/ SATURN: THERE IS FLUID LEAKING FROM POWER STEERING SYSTEM, ALONG A FLUID LEAK IN FRONT OF VEHICLE UNDERNEATH AND SHOULD BE INSPECTED, CLEANED AND IDENTIFIED BEFORE REPAIRING OR REPLACING. MODEL 2010-14 LACROSSE, 2011-14 REGAL, 2007-14 ESCALADE, SUBURBAN, TAHOE, YUKON, YUKON XL, YUKON DENALI, YUKON DENALI XL, 2013-14 XTS, 2005-14 MALIBU, 2007-13 AVALANCHE, SILVERADO, SIERRA, 2006-10 G6, 2007-09 AURA. *PE
PIT-51842012-12-10. Service bulletin. STEERING: STEERING WHEEL/HANDLE BAR; ELECTRICAL SYSTEM. CADILLAC/CHEVROLET/GMC: WILL HAVE INOPERATIVE CRUISE CONTROL; INOPERATIVE OR UNWANTED ACTIVATION OF RADIO CONTROLS; BACKLIGHTING FLASHES, FLICKERS OR INOPERATIVE DUE TO POSSIBLE SHORT TO GROUND ON STEERING WHEEL COIL CONNECTOR X2. MODELS 2007-2013 ESCALADES MODELS, AVALANCHE, SILVERADO, SUBURBAN, TAHOE, SIERRA, YUKON MODELS. *PE
PI0639A2012-05-01. Service bulletin. STEERING; ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS. GM: THE SERVICE STABILITRAK MESSAGE BEING DISPLAYED IN DIC. THE STABILITRAK INDICATOR LIGHT MAY ALSO BE ON. *JS UPDATED ON 7/9/2013. *KB
12-02-32-0012012-04-30. Service bulletin. STEERING:HYDRAULIC POWER ASSIST:HOSE, PIPING, AND CONNECTIONS. GMC: HYDRAULIC POWER STEERING LEAK AT HOSE CONNECTION TO STEERING RACK. ALL POTENTIAL LEAKS SHOULD BE COMPLETELY CLEANED AND INDENTIFIED BEFORE ATTEMPTING TO REPAIR OR REPLACE ANY POWER STEERING COMPONENTS. *JS UPDATED 4/22/13. *PE
PI-06712012-04-17. Service bulletin. STEERING:HYDRAULIC POWER ASSIST:PUMP; STEERING:HYDRAULIC POWER ASSIST:POWER STEERING FLUID. GENERAL MOTORS: RESERVOIR FOR POWER STEERING FLUID IS HEAT DAMAGED AND LEAKING. MAY CAUSED PROBLEMS WITH POWER STEERING PUMP. *PE

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