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# 3917.

Affected Component: ENGINE AND ENGINE COOLING:ENGINE

Summary

ENGINE HAS LOW POWER ON ACCELERATION OR WHEN TOWING. EQUIPPED WITH THE 6.0L LY6 AND L76 ENGINE. *NJ UPDATED 1/29/08. *NJ

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