Did you do the wrong actuator maybe?

 

Time to get the dmm out and check voltage at the connector

 

Perhaps! Which pins should I test?

Someone mentioned having to use a dealer tool to reprogram?

Also, I just turned it by hand with HVAC running and got cold air. Nipples are still hard.

 

There isn't any reprogramming on the 99-02's. That's a 2003+ thing.

 

Being an auto system there may be a synchronization process but i will have to look it up tomorrow.....

 

I didn't realize all these were so different. On mine the drivers side is by the blower motor under the passenger side of the dash and the passenger side is buried under the dash in the center under the light detector. Very hard to get too.

 

03-up dual zones are a pain, and run through the hvac module, bcm, and pcm.... 99-02 are simple control head and actuators... Some inputs from the pcm but mostly for idle and high rpm shut down to protectvthe system... Ive done the passenger side actuators on newer systems through radio opening and glove box... PITA but doable... As i said i have a low profile 1/4" snapon ratchet set that makes it easier!!!!

 

Got it working. There are a ton of people with magic dances to get it to work. I found a simple one that works for me.

Turn all AC off and heat to coldest temp

Disconnect neg battery

Connect battery

Get in truck, close door

Turn ignition on but don't start motor
Wait a couple minutes and listen to your actuator chirping. I felt it moving. It's discovering the bounds of the blender and can take a while.

Start engine and go for a drive to get heat in the system for easier testing.

Park, engine off, open and close door. Supposedly door open and close ends a cycle, what that means I don't know.

Start truck and test! Mine worked at this point.

Thanks all for the help! Once again, y'all helped out tons.

 

Opening and closing the door turns the RAP module off and causes everything to power down completely.... Glad its fixed....

 

I have an 01 that is stuck in defrost were is that actuator? and how much of a pain is it to change.