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# 990602012.

Affected Component: ENGINE AND ENGINE COOLING

Summary

CONDITIONS WITH HEATER INOPERATIVE, BLOWS COLD AIR, ENGINE OVERHEATS, AND RUST IN THE COOLANT SYSTEM. *TT

Click a tab for more information.