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| | | Heater Hose Routing? | Joined: Mar 2016 Posts: 22 stranger | OP stranger Joined: Mar 2016 Posts: 22 | Anyone have a diagram for heater hose routing for a Chevy G20 (1990, 5.7.l ) WITHOUT a rear/aux heater? been looking online and found nothing useful.
Just removed the rear heater and all the hoses because of leaks. Almost done replacing all the hoses and old couplers. Installed a new 4way heater valve (right at the in/out of the cab heater) and it leaked so it's going back; i would prefer not to wait for another and be done with this.
Seems to me hose to heater routing could be way more simplified. I have a feeling that 4way Im using is only because there was a rear heater.
chevy g20 • 350 • 5.7l • 1990
| | | Re: Heater Hose Routing? | Joined: Jun 2010 Posts: 18,286 Likes: 559 | Joined: Jun 2010 Posts: 18,286 Likes: 559 | My red '93 had rear heat, the hoses head towards the back in the passenger wheel well ( right by #5 spark plug). I removed the rear heat & I cut the hoses right there & put in plugs & hose clamped both hoses.
SUNSHINE VANS-VAN DIEGO ADRENALIN BY THE GALLON & CHASIN RACIN ONE FOR THE DIRT & ONE FOR THE STREETS '93 CHEVY G30 454 4X4 SPORTVAN EXT 146" WB '92 CHEVY G30 454 BEAUVILLE EXT 146" WB | | | Re: Heater Hose Routing? | Joined: Mar 2016 Posts: 22 stranger | OP stranger Joined: Mar 2016 Posts: 22 | You cut the hose that comes off the top off the engine? doesn't that go to your heater core inside? I think I have decided to take out the heater control valve altogether, cap the vacuum and just run the coolant flow through the cab at all times. have read it won't really add much heat -
chevy g20 • 350 • 5.7l • 1990
| | | Re: Heater Hose Routing? | Joined: Jun 2010 Posts: 18,286 Likes: 559 | Joined: Jun 2010 Posts: 18,286 Likes: 559 | The hoses that come out of the heater core that goes to the rear & the return are the one I cut & plugged.
SUNSHINE VANS-VAN DIEGO ADRENALIN BY THE GALLON & CHASIN RACIN ONE FOR THE DIRT & ONE FOR THE STREETS '93 CHEVY G30 454 4X4 SPORTVAN EXT 146" WB '92 CHEVY G30 454 BEAUVILLE EXT 146" WB | | |
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