A/C acting up

[dirtyjimbo7o2]

Hey all so just got this hummer a couple weeks ago H3 2008. AC WAS WORKING LIKE A CHAMP HERE IN VEGAS. TODAY OUT OF NOWHERE NO NOISE NO WARNING IT JUST STOPPED WORKING.
TOOK A LOOK UNDER THE HOOD AND THE AC LINES WERE ALL ICED OVER
DEALERSHIP SAID ITS THE FAN BLOWER MOTOR AND RESISTER.
SO I HAVE A ROAD TRIP TOMORROW AT 6 AM FOR CEDAR CITY UTAH FOR MY BOYS BASEBALL TOURNAMENT AND I CANT CANCLE THE TRIP AND WAIT FOR THE PART TO COME IN.
I MADE A HOMEMADE DRY ICE USB POWERED BUCKET THING TO HELP WITH THE HEAT.
ANYWAY JUST STOPPED AT MY STORE HERE TO BUY SOME DRY ICE AND BAM THE AC KICKS ON. ALL EXCITED BUT NOW I GOT TO THE PRACTICE FIELD 10 mins later shut the car off NO AC AGAIN.. WTF
Heres a puc of my bad ass usp cooler... i know you wana see it haa

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[Zach]

Does it stop blowing? If so, probably the resistor and connector. There is an upcoming recall for it, but it isn't out yet and no parts available for it

 

[dirtyjimbo7o2]

Its stopped all of suddenly. Took it to the dealership and they said it was the blower motor and resistor. But not a hour later it cane back on. Shut the truck off and it hasn't came on again.

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[nightstalker]

See attached pics. This is how I revived my h3. I had the same problem, it was a wire contact issue. The pic with the wire tie has solved my problem as it keeps a good contact.


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[SedonaBound]

Be careful you don't suffocate with that dry ice generating CO2 that will displace the O2 inside the truck. You won't know it; you'll just pass out at 75 MPH. You might want to consider renting a car for the weekend.

 

[dirtyjimbo7o2]

Didnt need it . Soon as we left vegas into utah is was not that hot. With the ac going without the blower the vent on the hwy made it pretty comfortable inside. Girlfriend was impressed with my bear grills bucket anyway lol

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[Best4x4]

Quick question for ya......

You didn't by chance install the Pontiac/Saturn HVAC control head into your H3 did you??? I know for a while everyone on H3 forums was buzzing about how cheap they were vs H3 HVAC control heads and how great they worked. I myself bought 2 because they were so cheap and I installed them into my H3's in the fall. Then the following summer both H3's would eventually Freeze over and drip like mad!!!!! Had both H3's checked and all R134A, and the rest of the system was fine. No one could figure out the problem, and I had honestly forgot about the Pontiac/Saturn HVAC control head swap!! When I remembered it I immediately ran out and swapped one out and did a test run over the weekend. Results were instant and no more freeze ups have ever happened. I also re-installed the original control head into my wife's H3 and boom the problem went away. Both H3's have been fine a year later with no freezing up after swapping back to the H3 HVAC control heads.

I later figured out the programming inside the Pontiac/Saturn HVAC control head must be different either due to the fact they're mostly convertibles, or they have different AC Compressor run timing values. Fact is yes the Pontiac/Saturn setup looks identical besides the shiny black knobs vs H3 dull black, orange backlite, and the Recirculate icon is a car vs an SUV. However even the board shares the same P/N I did see a different rev #.

Just something to check or be aware of. A blower that cuts out will certainly cause the system to freeze as zero air is moving, but in my case the freeze ups were HVAC control head related.