Hi, this is Bo, an auto expert on RepairPal's Car Genius team!
A fellow North Carolinian! We do need A/C in this miserable heat!
Sounds like your HHR is giving you the cold shoulder – or rather, no cold air at all! Since your blower isn't responding and the high side pressure is stuck at zero, we have a couple of potential culprits. First, double-check that the AC compressor is engaging. If the compressor clutch isn’t kicking in, you’ll get no pressure buildup.
Next, ensure your system has the correct amount of refrigerant – too little or too much can cause issues. Since you've fixed leaks, verifying that none of them have reopened might be a good idea. There is an A/C dye you can use to track leaks in the system.
Finally, don't overlook electrical gremlins. The blower motor issue might be tied to a faulty relay, fuse, or even a wiring problem. Sometimes, a stubborn blower resistor can blow your fuse – literally. Check the blower's wiring harness. Those can go bad as well. Usually, the dealer will sell replacement harnesses.
If you need more advice, have other questions, or need to find a certified repair shop in your area, just let me know! Call us at 877-913-1554, and we'll gladly find you a certified RepairPal shop in your area!
