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Click on image for the lowdown. 
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| | | Forums66 Topics128,024 Posts1,055,393 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: Aug 2001 Posts: 1,299 'Bolter | | 'Bolter Joined: Aug 2001 Posts: 1,299 | The high low will only control amount of heat by fan speed. The way to change the temperature output is by controlling the amount of hot engine coolant going through the heater core with some sort of a mechanical valve. | | |
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