TSB Document:

• Sorry, the NHTSA has not posted this TSB document yet.

You can still get the detailed info from Hummer for this TSB. Call your local Hummer dealer's service department & ask for a copy of TSB# 050604060.

Affected Component: ENGINE AND ENGINE COOLING

Summary

POWERTRAIN CONTROL MODULE (PCM), ENGINE CONTROL MODULE (ECM), TRANSMISSION CONTROL MODULE (TCM) DIAGNOSTIC TROUBLE CODE(S) (DTC)(S) P0601, P0602, P0603, P0604, P1621 SHARED IN MULTIPLE MODULES. *TT

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