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Global Mod,
Mod | | | Forums66 Topics128,089 Posts1,056,141 Members48,436 | | 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: Mar 2001 Posts: 279 Shop Shark | | Shop Shark Joined: Mar 2001 Posts: 279 | With all of the changes in the appearance of the website, I'll be darned if I can figure out how to do a search anymore, so I'll just come out and ask the question. Has anyone removed the heater thermostat control unit and by-passed it with an aftermarket butterfly valve type of setup? My control leaks at the seal where it mounts to the firewall. I'm not seeing any leaking around the heater itself and I understand those thermostat control unit seals often go bad. Rather than repair the unit, I thought I'd take it out and bypass it with a butterfly valve type setup. Someone mentioned this to me today as an option. I'm curious as to whether others have done this and, if so, what all is involved. Thanks guys and gals. | | | | | Joined: Nov 2001 Posts: 1,517 'Bolter | | 'Bolter Joined: Nov 2001 Posts: 1,517 | Havent used a butterfly one,but the kit for your orig. one is
Napa/Balkamp part# BK660-1000,"heater control repair kit". | | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | check the parts stores for something that looks like this - all that's involved is removing the original and replacing it in the hose under the hood - works fine, controled by a cable to the dash, and can be used to shut water flow right off in summer Bill | | | | | Joined: Mar 2001 Posts: 279 Shop Shark | | Shop Shark Joined: Mar 2001 Posts: 279 | Marty, Bill, thanks for the replies. I bought a repair kit from Classic Parts and have yet to install it. I may try that first and see if it fixes the problem. Bill, that photo looks like what was described to me today by a friend. He said it was controlled by a cable inside the cab. Thanks again guys. One or the other will do the trick. | | |
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