4 Wheel Drive Indicator Lamp Will Not Come On - keywords check engine MIL haul tow
| Subject: | 4 Wheel Drive Indicator Lamp Will Not Come On |
| Models: | 2007-2008 Chevrolet Silverado |
| 2007-2008 GMC Sierra |
| Equipped With Manual Shift Transfer Case RPO NQG |
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
Customers may comment that the 4x4 indicator lamp will not come on in the instrument panel when the transfer case is shifted into 4-wheel drive.
Recommendation/Instructions:
Using the tech 2 command the instrument panel lights on, if the 4x4 indicator light, check engine light and tow haul lamps do not come on inspect the AUX HVAC 10 amp fuse in the under hood fuse block and associated circuit for a possible open.
If the lamps do come on when commanded with the tech 2 inspect the transfer case switch and front axle actuator for proper operation.
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.
