I have a 2004 H2 Hummer with some issues and dont know how to fix it. For some reason my ac went out and is now only blowing hot air from the vents. My RPM gauge stop moving and dont know how to fix it. Can someone please help me out??

 

Your AC may be the blend door actuator, search those words and you should find quite a bit of info on where to buy the part and how to replace.

As for the RPM gauge, I'm sure the stepper motor has gone bad. You can buy replacement motor kits on ebay for pretty cheap. If you have basic soldering skills you can replace them on your own and save a ton of money. There are many youtube vids on how to replace them.

Hope that helps.

 

If the actuator is okay, then the next thing to check on would be the compressor clutch to see if its even engaging to make the cooler air.

 

Thats normal for the lemon editions

 

Like the other helpful posts said. If the compressor is coming on when called for it's most likely a blend door problem or an actuator motor. If the compressor does not come on then you most likely need an A/C recharge or system repair. The dash can be swapped with a rebuilt unit or sent in for repairs or like previously mentioned you can fix it your self. The dash is easy to remove. These vehicles are far from being a lemon. I love my H2.