My A/c will work for a few miles and then blow hot air. nothing will stop this until I turn off the ignition one notch and then back on (truck in neutral, coasting) and then it works fine all day.

Asked by Jul 14, 2014 at 08:16 PM about the 2004 Chevrolet Silverado 1500 Ext Cab Short Bed 2WD

Question type: Maintenance & Repair

2004 GMC Serria 1500 extended cab, slt.

2 Answers

40,485

Try replacing your cabin air filter. I know on some vehicles when they get dirty, it causes the A/C to to be intermittent. Here's a short how to video: http://m.youtube.com/watch?v=L37x4b35L8U

2 of 2 people found this helpful.
67,465

It is possibly just vacume line leak if it just doe,s it once in awhile.Check under dash at air box up to switch for leak,s.

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