1993 GMC C1500

1993 GMC C1500
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WFETTES
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Noises problem
1993 GMC C1500 V8 Four Wheel Drive Automatic

when truck is started and when shut off there is a snapping noise that sounds like its coming from the heater inside the cab near the fan any ideas on what would be the cause thanx
Oct 30, 2010 at 8:40 PM
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HMAC300
  • ✓ASE Certified Mechanic
  • 48,601 POSTS
  • ASE Certified Mechanic
noises are hard to diagnose as wecan'thear them, but it mightbe your catalytic converter making the noise as it's on that side of hte truck/.
Nov 2, 2010 at 5:44 PM
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