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RecallGazette

Vehicle problems, recalls & safety intelligence

Buick Rainier 2005–2014 — technical service bulletin

Bulletin 01-07-30-042H · NHTSA communication 10137776 · issued Jan 14, 2014

Technical service bulletin
communication type
Power Train
component
2005–2014
model years
60
vehicle entries

Official summary

This information was created to inform the technician that the 2-3 upshift and the 3-2 downshift clunk is caused by the releasing of the 2-4 band and application of the 3-4 clutch assembly during an upshift. Also during a 3-2 downshift, the releasing of the 3-4 clutch during the application of the 2-4 band, can cause torque reversal down the output shaft creating a clunk. This is a normal condition.

Vehicles covered

What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.