Tike_Maylor

Hi All,

I'm getting my AC system fixed in my C4 (5.7L V8, 40th Anniversary Edition), and my mechanic fixed everything-- leaks, R12>R134a conversion, etc-- but we are facing issues with the Digital Climate Control Panel,GM Part 19151956 (AC DELCO 1573765), as it's not doing what it's supposed to even after everything else was changed, and either has to be fixed or swapped out.

I've scavenging online, everything kind of expensive ($250 to $400 non-ebay) but was wondering if I could swap it out for something like GM Part 16162371 (ACDELCO 1571929), the manual control equivalent.

***EDIT: TLDR, This is taking the Digital AC control panel and switching to the manual control panel to resolve error code misread

Let me know!

jv9999

Sorry, you can't swap the manual control for the automatic one. The manual one is completely different in how it works. Take it apart and get some electronic contact cleaner (even Walmart carries it). Clean all the connection points and the spots on the board where the rubber buttons hit and put it back together. Chances are pretty good that it will come back to life.
If that doesn't work, any control from 1990 to 1996 will work. The only difference being the 95-96 ones have white lettering.

Tike_Maylor

Thanks for the response-- now knowing I have the range of '90-'96 to work with, that should help a bit.

s carter

Before you go to the trouble or expense of finding the control in the Dashboard you may if you have not done so yet, Test or diagnose the programmer down on the Firewall by brake pedal.

When I first got my car I had to De-Butcher my 93 it had a control head out of a 95 (white button's) and an AC system that had the compressor running anytime the fan was on. Previous Owner was a hack and I thought it was the mismatched control but WVZR-1 gave me some insight that was correct about the control/programmer under dash possibly the problem and it was. As it turns out I found that the previous Owner had run a wire from fan power to compressor, so control is good and was not the problem.

So if you feel like you need the in dash control I have the white button head I can sell you for a lot less than ebay, just PM me and we can work things out.

Tike_Maylor

My mechanic did suspect something along those lines-- my car's previous owner did do a few electrical things to the car (radio, color changing headlights, etc.) I'll give it a look, and I most definitely will PM you if I do need it.

Like I mentioned in some other forum posts, I'm truly amazed by the supportive and dedicated members of this forum. Thanks a lot!

s carter

In my case I had a fried chip with lots of corrosion and got lucky and was able to locate top and bottom at same place probably same car just put in weeks apart.

2 of the photos are the programmer with the corrosion and the other is the head if you want it

gdgeorge

You might want to look at the troubleshooting stuff at batee.com, There's a lot of good info there. They also offer reasonable rebuild services or parts if you'd rather DIY.

Jerry