Subject: | Power Window Inoperative After Start Up |
Models: | 2007-2009 Chevrolet Silverado |
2007-2009 GMC Sierra |
WITHOUT DL3 and/or AN3 |
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Some owners may comment if they push down on the drivers power window switch, shortly before cranking the engine, the drivers power window may be inoperative for a short time after the engine starts. The driver's power window switch has "stuck switch software" built into the switch, which disables the switch in the event of a switch sticking in a position other than neutral. If the power window switch is pressed shortly before cranking the engine, the software may recognize it as a stuck switch and disable the switch. The power window switch will reset itself automatically once the switch is in the neutral position (released) for 2 seconds.
Note: If the switch is released and reapplied before the 2 seconds has elapsed, it will remain inoperative until the switch is released for a full 2 seconds.
This is a normal characteristic and no repairs should be made.
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.