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Service bulletins for the 2011 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.

2203 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Transfer case are shown. Show all

Bulletins, newest first
PIP4885H2024-04-15. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). NQG 4WD Models With Noise Vibration On Dry Pavement.
PIP4885G2024-04-15. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). NQG 4WD Models With Noise Vibration On Dry Pavement.
PIP4885F2024-04-15. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). Vibration On Dry Pavement.
PIP4885E2024-04-15. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). NQG 4WD Models With Noise Vibration On Dry Pavement
PIP3366C2018-08-20. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE); POWER TRAIN:AUTOMATIC TRANSMISSION. This Preliminary information communicates to the dealer technician thatLight Duty Trucks equipped with automatic transmissions and 4 wheel drive may exhibit a condition of grinding/ratcheting type noise when shifting the automatic transmission into park while the transfer case is in 4 wheel drive low (4LO) range. Dealers technician's are advised this condition should be deemed a normal characteristic of 4WD low operation.
060089026N2018-06-04. Service bulletin. ELECTRICAL SYSTEM; VISIBILITY:SUN/MOON ROOF ASSEMBLY; STRUCTURE:BODY:DOOR; POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE); VISIBILITY:WINDSHIELD; ELECTRONIC STABILITY CONTROL (ESC). This warranty bulletin provides labor operation numbers for customer concerns that cant be duplicated.
PIP4885F2017-08-15. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE); POWER TRAIN. This Preliminary Information communication provides information to the technician about vehicles that have a groan, growl, or moan coming from the vehicle when operating the vehicle in four wheel drive. Driving on clean, dry pavement in Four-Wheel Drive High or Four-Wheel Drive Low for an extended period of time may cause premature wear on your vehicle's power train. Dealer should advise the customer not drive on clean, dry pavement in Four-Wheel Drive High or Four-Wheel Drive Low for extended periods of time.
PI-06152012-02-07. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). GMC/CHEVROLET: BULLETIN PROVIDES INFORMATION ON THE SEAL REVISION AND THE TRANSFER CASE OUTPUT SHAFT SLINGER FOR CERTAIN MODEL YEAR TRUCKS. *PE

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