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Chevrolet TSB #020730039A
2003 Chevrolet Impala
![CarComplaints.com Seal Of Avoid Like The Plague](http://cdn2.carcomplaints.com/img/seals/worst.png)
TSB Document:
Affected 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 P0742 SET. *TT
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