1997 GMC C1500 A/C

150,000 MILES • V8 • 4WD • AUTOMATIC
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DUTMARAW
  • MEMBER
  • 1 POST
My A/C does not cool under certain conditions.
When driving or idling over a period of time the A/C will stop cooling blowing only warm air. If I put the truck in neutral and rev the engine I can hear the compressor magnetic clutch engage and cooling will start again for 4 or 5 minutes.
I changed the battery as it was marginal. The problem did not go away. The compressor was changed about 1.4 years ago

Thanks
Bill Mares
Nov 3, 2008 at 12:57 PM
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DOCFIXIT
  • ✓Experienced Mechanic
  • 18,828 POSTS
Need to get gague readings post low and high.
Nov 6, 2008 at 6:16 AM
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