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Service bulletin PB-12050

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10044218
Published by NHTSA2012-05-23
Manufacturer's numberPB-12050
Manufacturer's date2015-05-01
ReplacesCSP-12050-C
NHTSA componentSUSPENSION:REAR:AXLE:NON-POWERED AXLE ASSEMBLY

NHTSA's summary

CHEVROLET/GMC: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. ON SOME 2011-2012 TRUCKS, A GRINDING NOISE AND VIBRATION WOULD BE NOTICEABLE DUE TO THE REAR AXLE RIGHT HAND SIDE BEARING ADJUSTER CLIP AND BOLT MAY COME LOOSE INSIDE OF REAR AXLE. *PE UPDATED 9/6/12. *PE UPDATED 7/18/14. *PE UPDATED 11/6/15. *PE

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Suspension

Vehicles listed
CHEVROLET EXPRESS2011, 2012
CHEVROLET SILVERADO2011, 2012
CHEVROLET SUBURBAN 25002011 (the catalog's model; the bulletin names a series or trim of it)
GMC SAVANA2011, 2012
GMC SIERRA2011, 2012
GMC YUKON XL 25002011 (the catalog's model; the bulletin names a series or trim of it)

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
11V0070002011-01-06. SUSPENSION:REAR:AXLE:SPINDLE
20104542010-12-17. Suspension
10V6430002010-12-17. SUSPENSION:REAR:AXLE:SPINDLE

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
05-03-08-002J2024-09-20. Service bulletin. This service bulletin provides information to dealership personnel on diagnosis and replacement of shock absorber and strut due to fluid leak.
05-03-08-002J2024-09-20. Service bulletin. This service bulletin provides information to dealership personnel on diagnosis and replacement of shock absorber and strut due to fluid leak.
10-03-10-001G2024-06-18. Service bulletin. This informational bulletin provides information on Wheel Balancer Mounting Instructions.
15-00-89-004G2024-05-15. Service bulletin. This service bulletin provides technicians with information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.
PI0430B2024-05-06. Service bulletin. Magnetically Controlled Suspension Electrical Connector Not Seated.
PIT5052D2023-12-26. Service bulletin. Steering Wheel Vibration Or Customers Looking To Add Steering Stabilizer.
PIT5049A2023-12-26. Service bulletin. Rattle Squeak Clunk Bump Noise From Front Suspension.
PIT4954C2023-12-26. Service bulletin. Suspension.
PIT5214F2023-12-18. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that have had multiple repair attempts that are being performed on customer?s vehicles that exhibit vibration conditions without utilizing the support of General Motors Technical Assistance Center. If valid vibration frequency or Road Force Variation data has been collected and a repair attempt does not correct the customer complaint, contact General Motors Technical Assistance Center for further support. For any vehicles that remains unrepaired after being at the dealer for three days or more and a related bulletin or PI is not found, contact General Motors Technical Assistance Center for further support.
PIT5120A2023-12-11. Service bulletin. Stabilitrak/Traction Control OFF With Red Brake Warning Lamp