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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!
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| | | | Joined: Jun 2014 Posts: 128 Shop Shark | | Shop Shark Joined: Jun 2014 Posts: 128 | I can't find a diagram of how the heater is hooked up. All I know is that the hot water flows through it no mater what and it makes the cab very hot. Does it have its own thermostat?
Thanks
Andy
Sometimes you're the window
Sometimes you're the bug
| | | | | Joined: Mar 2004 Posts: 6,214 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 6,214 | No, you need to add a Summer/Winter cut-off valve in one of the lines under the hood. The heaters were all dealer installed accessories so there really is no right or wrong way to do it. That said Chevrolet did have a valve-nipple that would thread into the block that the hose connected to that made it an easy job. Mike B  | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | | | | | | Joined: Jun 2014 Posts: 128 Shop Shark | | Shop Shark Joined: Jun 2014 Posts: 128 | Since I won't be using it in cooler times can I just disconnect it?
Sometimes you're the window
Sometimes you're the bug
| | | | | Joined: Dec 2015 Posts: 2,063 Big Bolt Forum Moderator | | Big Bolt Forum Moderator Joined: Dec 2015 Posts: 2,063 | you can disconnect it without hurting anything, you just won't have heat (or defrosters) | | |
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