Diagnostic Aids

WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.

Perform a visual inspection for loose or poor connections at all related components. Refer to Testing for Intermittent Conditions and Poor Connections .
A short to ground in the inadvertent power supply voltage circuit or the battery positive voltage circuit will cause the TBC 2C fuse to open.