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Click on image for the lowdown. 
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| | | Forums66 Topics128,089 Posts1,056,352 Members48,442 | | 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!
| | THANKS!
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: Mar 2003 Posts: 181 Shop Shark | | Shop Shark Joined: Mar 2003 Posts: 181 | Matt is right- Chevy was 10, 20 and 30 while GMC was 15, 25, and 35. Nothing in the series number dictates chassis length. The VIN will state that. | | |
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