2003 GMC ENVOY
70,000 MILES
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TWHITDOG
  • MEMBER
  • 1 POST
Lower Passenger side intermittent thumping sound from lower firewall.
Jan 28, 2013 at 9:52 PM
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HMAC300
  • CERTIFIED EXPERT
  • 48,601 POSTS
have a pro check this out it could be anything
Jan 29, 2013 at 2:44 PM