TSB 08-07-30-026I — Buick, Cadillac, Chevrolet, GMC, Pontiac and Saturn Service bulletin

08-07-30-026I is a service bulletin filed with NHTSA by Buick, Cadillac, Chevrolet, GMC, Pontiac and Saturn, covering 31 Buick, Cadillac, Chevrolet, GMC, Pontiac and Saturn models across the 2007–2009 model years. NHTSA's summary reads: This service bulletin provides information on some vehicles that may rock or move slightly forward or rearward while in Park at start up after cold soak. This condition may be accompanied by a clunk noise. This is a slight movement that is more often seen visually, rather than…

NHTSA's file names Buick Enclave (2008–2009); Buick LaCrosse (2007–2009); Cadillac CTS (2007–2009); Cadillac Escalade (2007–2009); Cadillac SRX (2007–2009); Chevrolet Avalanche (2007–2009); Chevrolet Aveo (2007–2009); Chevrolet Blazer (2007–2008); Chevrolet Cobalt (2007–2009); Chevrolet Colorado (2007–2009), and 21 more vehicles listed on this page. A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.

No. 08-07-30-026I is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.

Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under 08-07-30-026I, its date, and NHTSA's own summary from the public file.