Hvac Blend Door Actuator Replacement

[chasemiller]

I have an 04 silverado that I had to change a battery in. Now, the AC is stuck on defrost.

Can someone tell me if this is a blend door actuator problem?

 

How hard is it to fix.

[jsharp1023]

bump

 

 

I have an 04 silverado that I had to change a battery in. Now, the AC is stuck on defrost.

Can someone tell me if this is a blend door actuator problem?

 

How hard is it to fix.

[txab]

A re-calibration may fix you up. Try disconnecting the battery again for a few minutes. Reconnect it. Then turn the key to the on position, but don't start. Don't touch the HVAC controls. Let them do whatever that want to do. Air flow may change outlet points during this time. Wait about 1 minute. Turn key off. Sometimes opening and closing the door can make a difference as the vehicle controls see this as "cycle" completion. Next start the vehicle and drive it a short distance and see how it performs. You may indeed need to replace an actuator.

[safeman]

Hi

Try this actuator recalibration procedure.

With the ignition switch in the on position, remove the HVAC/ECAS fuse for a minimum of 10 seconds. This fuse is located in the under hood fuse/relay box.

Re-install the HVAC/ECAS fuse.

Start the vehicle.

Wait 40 seconds for the HVAC control module to self-calibrate

 

Try this..... it SHOULD work

[monstermarlin]

Hi

Try this actuator recalibration procedure.

With the ignition switch in the on position, remove the HVAC/ECAS fuse for a minimum of 10 seconds. This fuse is located in the under hood fuse/relay box.

Re-install the HVAC/ECAS fuse.

Start the vehicle.

Wait 40 seconds for the HVAC control module to self-calibrate

 

Try this..... it SHOULD work

 

 

 

 

ok. i did this all about a week ago. i put a new actuator in and re-calibrated it. it worked great for about 5 days. today, it went back to doing the same. is there possibly a different explanation, or do i need to re-callibrate again? the ac will work when the truck gets up to speed, however. thanks.

[monstermarlin]

Hi

Try this actuator recalibration procedure.

With the ignition switch in the on position, remove the HVAC/ECAS fuse for a minimum of 10 seconds. This fuse is located in the under hood fuse/relay box.

Re-install the HVAC/ECAS fuse.

Start the vehicle.

Wait 40 seconds for the HVAC control module to self-calibrate

 

Try this..... it SHOULD work

 

 

 

 

ok. i did this all about a week ago. i put a new actuator in and re-calibrated it. it worked great for about 5 days. today, it went back to doing the same. is there possibly a different explanation, or do i need to re-callibrate again? the ac will work when the truck gets up to speed, however. thanks.