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Click on image for the lowdown. 
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| | | Forums66 Topics128,073 Posts1,055,908 Members48,429 | | 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!
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#80911 08/03/2007 3:39 AM | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | that's a thermostatic Ranco valve - GM quit using the capillary tube on them cuz they don't last - you should be able to find a manual one, or have that one rebuilt, this guy can fix you up , might even have a new one Bill | | |
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