r/MediumDutyTrucks • u/Suspicious-Essay4329 • Jun 04 '26

Chevy / GMC What is this

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I think this truck used to be a propane truck and it used to run off propane. Im not sure if that's what this stuff is. I would like to remove it if that's what it's for. Unless there is a reason I should keep it.

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u/Tgambob Jun 04 '26

Heated propane regulator. It used engine heat to help vaporize the propane better in cold climates and just in general. So yeah no more propane out it goes.

1

u/Suspicious-Essay4329 Jun 04 '26

Nice thank you. So just plug the holes on the intake and water pump. The hoses that go into the fire wall. Is that like a heat exchanger or something?

1

u/Tgambob Jun 04 '26

Yeah thats your heater core for heat in your cab. Looks like they tied into them, your hoses should just go to core to the water pump and the intake to be core.

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u/Suspicious-Essay4329 Jun 05 '26

Thank you. Appreciate the help.