Firm transmission shifts, shudder / chuggle, transmission won't downshift on deceleration, service engine...
Chevrolet technical service bulletin 020730039 for 2003 Chevrolet Impala, 2003 Pontiac Grand Prix and 2003 Buick Lesabre and others.
- Bulletin number
- 020730039
- Component
- Power train: automatic transmission
- Summary
- Firm transmission shifts, shudder / chuggle, transmission won't downshift on deceleration, service engine soon light illuminated, diagnostic trouble code (dtc) p0742 set. Tt
Owners of these vehicles have filed 144 complaints in the transmission category.
Vehicles covered
- Chevrolet Impala 2003 2003
- Pontiac Grand Prix 2003 2003
- Buick Lesabre 2003 2003
- Buick Regal 2003 2003
- Chevrolet Venture 2003 2003
- Chevrolet Monte Carlo 2003 2003
- Pontiac Bonneville 2003 2003
- Buick Century 2003 2003
- Buick Park Avenue 2003 2003
- Buick Rendezvous 2003 2003
- Pontiac Montana 2003 2003
- Oldsmobile Silhouette 2003 2003
- Oldsmobile Aurora 2003 2003
- Pontiac Aztek 2003 2003
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