Where would I find the heater hoses to check them?
Yes the vents are vacuum controlled.

Hey y’all, My heat recently stopped working in my van. (1995 g2500) The heat stopped and then it’s like the vent to outside is stuck open and I’m constantly getting blow even with the fan turned off. Should I replace the heat core? Any ideas on how to fix the issue would be rad. It’s getting real co...

Mike. You are a legend!!!! I just went ahead and replaced the main ground wire and the terminal connector to the positive and it worked!!! You have no idea how great full I have for your help. I’d spent hours and hours trying to figure out this problem and was on the verge of giving up. But your ide...

Hey Mike, Did you Silverado have the side terminals wires for the battery? The van does and the whole connection is covered in rubber and a bolt goes through them to connect to the battery. Did you remove that rubber and then redo the battery terminal connections? I hope I’m explaining myself okay. ...

Hahaha I did the exact same thing when mine broke.
Long screw driver to the rescue.

When I turn the key in ignition, accessories do not turn on, no lights. Lights will not turn on at all when car off and usually they would. When I crank, nothing. If I connect a jump pack, I can get the van started. Once started the gauge dials, jump a lil, if I turn the headlights on, the whole thi...