WenmarOpen by Wenmar Pro

Service bulletin 3340

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 id10020874
Published by NHTSA2007-01-25
Manufacturer's number3340
Manufacturer's date2006-09-23
Replaces3340C
NHTSA componentSUSPENSION:FRONT:SPRINGS:LEAF SPRING ASSEMBLY:U-BOLT, LEAF SPRING TO AXLE

NHTSA's summary

LEFT FRONT AXLE SHAFT DIFFICULT TO REMOVE. AXLE DIFFERENTIAL LEAK SEAL SHAFT. *KB

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
CADILLAC ESCALADE1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
CHEVROLET AVALANCHE2002, 2003, 2004
CHEVROLET AVALANCHE 15002005, 2006, 2007 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET AVALANCHE 25002005, 2006, 2007 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET K PICKUP1999 to 2000
CHEVROLET SILVERADO1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
CHEVROLET SILVERADO 15002007 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 25002007 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 35002007 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SUBURBAN1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
CHEVROLET SUBURBAN 15002006, 2007 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SUBURBAN 25002006 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET TAHOE1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
GMC K PICKUP1999 to 2000
GMC SIERRA1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
GMC SIERRA 15002007 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 25002007 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 35002007 (the catalog's model; the bulletin names a series or trim of it)
GMC SUBURBAN1996, 1997, 1998, 1999
GMC YUKON1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
GMC YUKON XL2000, 2001, 2002, 2003, 2004, 2005, 2006
GMC YUKON XL 15002007 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON XL 25002007 (the catalog's model; the bulletin names a series or trim of it)
HUMMER H22003, 2004, 2005, 2006

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

Recalls for the same vehicles and component
20011002001-04-24. Suspension

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.
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.
PIT5049A2023-12-26. Service bulletin. Rattle Squeak Clunk Bump Noise From Front Suspension.
PIT4954C2023-12-26. Service bulletin. Suspension.
PIT5120A2023-12-11. Service bulletin. Stabilitrak/Traction Control OFF With Red Brake Warning Lamp
15NA082B2023-12-11. Service bulletin. Clunking Noise from Front of Vehicle During Turns and/or Bumps
15NA0822023-12-11. Service bulletin. Clunking Noise from Front of Vehicle During Turns and/or Bumps
1203100032023-12-04. Service bulletin. Diagnostic Tips for Difficult to Resolve Tire/Wheel Vibration Concerns