Diagnostic Aids
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. 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 in Wiring Systems.
- A short to ground in the following circuits will cause the TBC 2 A fuse to open.
- The instrument panel lamps dimming control.
- Battery positive voltage from the I/P fuse block TBC 2 A fuse.
- An open in the TBC 2 A fuse will cause the BCM to set the following DTC:
- B0951
- B2610
- B2625