has anybody been able to get the techinfo faq on how to get into the diag mode on a 93 to work on a 96?

You talking about the old "Flash" codes???? If so that feature was removed after 93. You have to use a Scanner on a 96 to retrieve codes.

thanks I was afraid of that I got the nice flashing temp and all cold air till it warms up if it does at all. any ideas on how much the dealer would charge to replace the acctuator?

Here'* what GM Service Info says:
Step 1
Was the Powertrain On-Board Diagnostic (OBD) System Check performed?
--
Go to Step 2
Go to the A Powertrain On Board Diagnostic (OBD) System Check

Step 2
Are any PCM DTC(*) stored?
--
Diagnose DTC(*) first. Go to Powertrain Control Module Diagnosis (Powertrain DTCs)

I need any & all DTC codes first to help you further.

have friend in parts hooked me up with dude in repair $150 on the side $25 for part. it was the electronic control for the air mix door

You guys are talking about two totally different things.

The original post is asking for ATC codes. Auto temp control.

Deathrat'* reply was for PCM fault codes, not ATC, but the answer is the same. 93 was the last year ECC (ATC) codes could be obtained through diagnostics built in.

Actually Will, The GM SI database says to check it THIS way first. This way you eliminate the obvious!

Topic: 96 ATC diagnostics mode

Original post:

He'* referring to the ATC diagnostics mode last used in 93 auto climate controls.