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Click on image for the lowdown. 
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| | | Forums66 Topics128,036 Posts1,055,461 Members48,422 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Oct 2004 Posts: 128 Shop Shark | | Shop Shark Joined: Oct 2004 Posts: 128 | Sounds like piston slap, very common on later model GM pickups. Go to www.pistonslap.com for a complete explanation. If that's your noise, it is considered normal. John | | |
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