1998 GMC Sonoma a/c blows cold & warm

1998 GMC SONOMA
101,000 MILES • 6 CYL • 2WD • AUTOMATIC
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BUNELLIE
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  • 1 POST
My a/c blows icy cold when first started, after a few minutes it blows warm. If I rev the engine, it again blows icy cold. I think it may need to be recharged. Is this something I can do with a can of R134a refrigerant on the low end--and where is that fitting located?
May 5, 2010 at 3:30 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Sounds more like its freezing up due to air and moisture that needs evacuating
May 5, 2010 at 4:56 PM
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