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# 3491.

Affected Component: FUEL SYSTEM, OTHER

Summary

HIGHWAY SPEED EXCESSIVE SMOKE AND FUEL KNOCK. *TT

Click a tab for more information.