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# 040604050.

Affected Component: ENGINE AND ENGINE COOLING:ENGINE

Summary

CNG FUEL LEVEL READS HIGHER THAN ACTUAL, INACCURATE FUEL LEVEL READING, MALFUNCTION INDICATOR LAMP (MIL) ILLUMINATED. *TT

Click a tab for more information.