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HVAC Display Dead - A/C Blows Hot - 2003 Z66

ErVikingo

Full Member
Joined
Sep 9, 2002
Messages
114
Location
Ft. Lauderdale, FL
I added this to another thread on issues with my truck but created a fresh thread in case someone else is having similar issues (don't want the info to get lost on the airbag thread)

Now a new mystery. HVAC blows warm, gas is OK, pressure switch is new. HVAC control display wont light up?????

Switches work but not the LED display. Removed and cleaned all fuses, disconnected battery for 30 minutes and tried again (no luck).

Took out switch/control/display (word to the wise the plastic snap clips get brittle and break) cleaned contacts. When you plug in the display shows 75 for 1 sec or less and shuts off.

Ideas????? I have searched and not found solutions. THANKS!
 
I'd guess needs new hvac control box, idk if can open those & try soldier new parts like I did on dash display.
Could be the blend door actuator there's 3 in my 07. Passenger left foot, & forget location other 2, one deep in dash difficult to change.
Anyhow good luck
 
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