Hey all. I changed out the fuel pump on my 03 Silverado yesterday,and decided to disconnect the battery while doing this, as to not blow up. In hindsight I should have just pulled the fuel pump fuse. Now the HVAC vent doors are out of calibration. I watched some you tube fixes, but these didn't work after two hours into it with no luck. Anyone have a plan to fix this. I really do not want to bring this to a dealer and fork over $100.00 just for a calibration. Appreciate any help.

 

Try pulling HVAC fuse to reset HVAC. Usually they self calibrate. Automatic HVAC I am guessing?