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Ask Chris (aka- Moose) Your Own Question
Chris (aka- Moose)
Chris (aka- Moose), GMC Technician
Category: GM
Satisfied Customers: 45093
Experience:  16 years of experience
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03 H2 1. compressor was running continuously (this was an

Customer Question

03 H2
1. compressor was running continuously (this was an intermittent problem that occurred once a month)
2. I pulled the fuse and would reinstall the fuse to lift the truck, when needed.
3. I recently pulled the fuse and when I reinstall, the compressor does not go back on.
Submitted: 1 year ago.
Category: GM
Expert:  Chris (aka- Moose) replied 1 year ago.

Welcome, I am Chris (aka-Moose)

Remove the compressor relay. With the key on are 2 pins at the relay powered? With the engine running, AC commanded on is there another pin that is grounded, this is the signal pin from the PCM.

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Thanks Chris

Customer: replied 1 year ago.
This explanation does not apply. I am inquiring about an air suspension compressor. Tis answer really needs advice from someone experienced with h2 hummers. lease re-post my inquiry unless you can answer again.Thank you or the help.
Expert:  Chris (aka- Moose) replied 1 year ago.

Thanks for the update on which compressor your referring to. Can you remove the air suspension relay. Verify pin 87 has power. Briefly jump pin 87 to pin 30, the compressor should run. While the engine is running the compressor should be running filling the air springs see if pin 85 is power and 86 ground. If all these are good then this is a relay failure. Let me know these results.

Expert:  Chris (aka- Moose) replied 1 year ago.

As mentioned in my first response, I would stay in contact with you. I've noticed you have not rated the post. So I assume you were not pleased with my help. I hate that you have spent money to get an answer but left not happy. Can you tell me why, or can I help more. If its more help you need just reply and we can pick up where we left off.