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Click on image for the lowdown. 
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| | | Forums66 Topics128,018 Posts1,055,339 Members48,419 | | 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 2006 Posts: 15 Junior Member | | Junior Member Joined: Mar 2006 Posts: 15 | I have replaced the thermastat twice
and there isn't any bypass valve on supply line
when I check the heater core with motor running it gets hot
But no heat gets inside cab | | |
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