# 2009 Chevrolet Silverado 1500 - AC trouble

**URL:** <https://community.cartalk.com/t/2009-chevrolet-silverado-1500-ac-trouble/168570>\
**Category:** Maintenance/Repairs\
**Tags:** chevrolet, airconditioning\
**Created:** [August 12, 2020, 2:55pm UTC](https://community.cartalk.com/t/2009-chevrolet-silverado-1500-ac-trouble/168570 "2020-08-12T14:55:28Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![TaxGuy](https://avatars.discourse-cdn.com/v4/letter/t/b19c9b/32.png) [@TaxGuy](https://community.cartalk.com/u/TaxGuy)\
**Post date:** [August 12, 2020, 2:55pm UTC](https://community.cartalk.com/t/2009-chevrolet-silverado-1500-ac-trouble/168570/1 "2020-08-12T14:55:28Z")

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Was driving along with A/C blowing at high max when I lowered the blower motor speed and A/C temp went to outside air temp???What happened?.Noticed trucks temp gauge was at lowest point of gouge. on dashbd.

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**Author:** ![TXdealer](https://avatars.discourse-cdn.com/v4/letter/t/50afbb/32.png) [@TXdealer](https://community.cartalk.com/u/TXdealer)\
**Post date:** [August 13, 2020, 1:46am UTC](https://community.cartalk.com/t/2009-chevrolet-silverado-1500-ac-trouble/168570/2 "2020-08-13T01:46:32Z")

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Not sure if this addresses your issue, but many GM products won’t turn on the A/C if the outside air is below a certain temperature. A failed ambient air temp sensor will cause the wrong outside temperature to be displayed and the A/C to be disabled.