This page concentrates on general motors corp.
Blend door calibration procedure international.
It only applies to the temperature door actuator.
Open hood bonnet for the rhd guys and locate fuse 15 in the fuse box next to the battery.
Remove the fuse and wait 1 2 minutes for any capacitive charges in the system to dissipate.
Press and hold the hot and cold buttons digital controls only for approximately 3 seconds.
Most of these endpoints are calibrated during the relearn procedure.
Okay the only recalibration procedure is for a system that has auto controls.
I just replaced the passenger blend door actuator in my van.
After reassembling the door and actuator and reconnecting the actuator connector initiate the door position calibration procedure.
The rear defrost light flashes when the van is started and it is still blowing hot all the time.
The hvac control head uses its pre programmed logic and actuator endpoints to position the door correctly.
However other popular gm models have the same issue.
The procedure is below for the calibration.
Blend door actuator motor calibration.
A trouble code may set if the components start to wear and the endpoints drift too far from the pre programmed positions.
If your vehicle has manual controls a recalibration is not possible or needed.
Turn ignition key to the on position and turn on the hvac system.
Temperature control and blend door problems on the gmc acadia and the chevrolet traverse.
If you happen to have auto controls the temperature door recalibration is performed as usual but the fuse will be labeled rdo batt.
I need to calibrate the manual temperature control.
Move the key to the off position.
We ll also cover replacement tips and the important calibration process common across the general motors line up.