a/c weirdness

sivarter · #1 08-10-2009, 02:12 PM

ill put it on MAX ac and be driving then switch it to vent/feet and it will stay at max ac setting, i can change it to anything defrost, defrost/feet and it will stay at max ac. i have to turn off the truck and take the key out to make it work right. it doesnt happen all the time, what is wrong?

2006 4.2l

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FireEngineer · #2 08-10-2009, 10:02 PM

I have of 06 4.2L as well. On my truck, which is an XL, I have all manual controls. As part of that, I have a MAX button that I push and it will recir. no matter what vent setting I then change it to.

wreedKR · #3 08-10-2009, 11:16 PM

Sounds like the EATC module itself. There are diagnostics that can be run if you have EATC.

sivarter · #4 08-11-2009, 01:04 PM

Quote:

Originally Posted by FireEngineer

I have of 06 4.2L as well. On my truck, which is an XL, I have all manual controls. As part of that, I have a MAX button that I push and it will recir. no matter what vent setting I then change it to.

yes, i have a XL manual also. i have a recir button but not a MAX button, just a a/c button and recir button.

whats EAtC?

TRIXSNK · #5 08-11-2009, 02:49 PM

Quote:

Originally Posted by wreedKR

Sounds like the EATC module itself. There are diagnostics that can be run if you have EATC.

Can you please elaborate on the process please for diagnosing.

I'm pretty sure my EATC needs to be re-built from the other thread going on but i'd like to know for my own general knowledge