My rear AC blows perfectly fine air and heat but my front AC blows only like a personal fan and takes upwards of 45 minutes to start.
Jan 7, 2020 at 10:37 AM
Front A/C not working properly
2006 GMC ENVOY
DON03
- MEMBER
- 1 POST
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KENW1
- ✓ASE Certified Mechanic
- 213 POSTS
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These vehicles had fairly common issues with this due to the blower control module. What you can do is remove the plug at the blower motor under the passenger side of the dash and use a voltmeter with one probed in each cavity of the connector to check for voltage. if it changes at each speed and goes to 12 volts the motor is bad, if not it's most likely the module. Also inspect the connectors for burning at the contacts which is another common issue with these. I'll post the wiring diagrams below.
These vehicles had fairly common issues with this due to the blower control module. What you can do is remove the plug at the blower motor under the passenger side of the dash and use a voltmeter with one probed in each cavity of the connector to check for voltage. if it changes at each speed and goes to 12 volts the motor is bad, if not it's most likely the module. Also inspect the connectors for burning at the contacts which is another common issue with these. I'll post the wiring diagrams below.
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Jan 8, 2020 at 11:32 AM
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