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October 1, 2012 Service bulletin

Cadillac/chevrolet/gmc: if transmission dipstick tube becomes fatigue and fracture, while in afm mode, it...

Chevrolet technical service bulletin PB-12138 for 2010-2011 Chevrolet Tahoe, 2010-2011 Chevrolet Silverado and 2010-2011 GMC Yukon and others.

Bulletin number
PB-12138
Component
Equipment
Summary
Cadillac/chevrolet/gmc: if transmission dipstick tube becomes fatigue and fracture, while in afm mode, it causes a ticking or rattling noise from front of vehicle, when engine vibrates. Models 2010-2011 all escalade, esv, ext; avalanche, silverado, suburban, tahoe; sierra, yukon, yukon xl.

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