TSB Document:

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

You can still get the detailed info from GMC for this TSB. Call your local GMC dealer's service department & ask for a copy of TSB# 3346.

Affected Component: ENGINE AND ENGINE COOLING:ENGINE

Summary

THERE HAS BEEN A HIGH PERCENTAGE OF NO TROUBLE FOUND (NTF) 6.6 LLY ENGINE CONTROL MODULES (ECMS) BEING RETURNED TO THE WARRANTY PARTS CENTER. THE NO TROUBLE FOUND (NTF) ECMS ARE BEING REPLACED FOR A SPECIFIC LIST OF DIAGNOSTIC TROUBLE CODES. *TT

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