One problem related to wiper has been reported for the 2006 GMC Sierra. The most recently reported issues are listed below.
Turned off engine, hvac fan still on. Will not turn off. This is the dual climate control system. Had to remove fuse so the battery will not discharge. Service bulletins were issued for this problem but did not include all vehicles, including ours.
| Blower problems | |
| Defogger problems | |
| Wiper problems |