ac not working in 04 buick rainier but it appears to have a full charge

Asked by Jun 06, 2016 at 08:04 AM about the 2004 Buick Rainier CxL Plus AWD

Question type: Maintenance & Repair

2 Answers

11,745

what does the pressure gauge read at idle high side and low side?

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1,090

You can bypass the compressor relay by pulling the relay and putting in a jumper wire.....this should get the system working so you can get pressure readings. There are high and low pressure switches built into the system and if they are bad or giving a bad reading the ECM will not turn on the relay to start the compressor.

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