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March 1, 2005 Service bulletin

Transmission slipping or torque converter clutch (TCC) inoperative with no service engine soon (SES) light...

Chevrolet technical service bulletin 030730001 for 2003 Chevrolet Trailblazer, 2003 GMC Envoy and 2003 Oldsmobile Bravada.

Bulletin number
030730001
Component
Power train: automatic transmission
Summary
Transmission slipping or torque converter clutch (tcc) inoperative with no service engine soon (ses) light displayed and no diagnostic trouble code (dtc) p1870. Tt update. Tt

Owners of these vehicles have filed 146 complaints in the transmission category.

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