Cooling fan will not come on unless A/C turned on then only on low

2008 CHEVROLET UPLANDER
169,000 MILES • 3.9L • V6 • 2WD • AUTOMATIC
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TED FINLEY
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New fans, comes as AC and radiator fans. checked relays. when ground check relay fans come on high speed. just replaced transmission new.
Apr 27, 2019 at 7:17 AM
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ASEMASTER6371
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Good afternoon,

Try this. Remove the connector for the cooling fans. Do this while the engine is running and see if the fan kicks on.

Check the fuses I circled in the diagram I attached for power as well.

Roy
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Apr 27, 2019 at 9:42 AM
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TED FINLEY
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Checking now. think I checked this relay, but will check again. thanks
Apr 27, 2019 at 1:52 PM
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ASEMASTER6371
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Sounds good. Keep us updated.

Roy
Apr 27, 2019 at 1:58 PM
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TED FINLEY
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checked fuse, checked relay okay.
Apr 27, 2019 at 6:37 PM
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ASEMASTER6371
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Did you do what I suggested with the sensor connector?

Roy
Apr 27, 2019 at 7:04 PM
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TED FINLEY
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Yes.
Apr 29, 2019 at 7:47 AM
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ASEMASTER6371
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And the result.

Roy
Apr 29, 2019 at 8:20 AM