1992 chevy 2500 silverado, wire melting under schroud on firewall passenger side? Cause, something to replace? I have replaced wire, but cannot deteremine cause? I was in four wheel low, belt shreaded (replaced) hung up. Let idle 10 min, noticed smoke stink in cab and at schroud/ Any thoughts would be greatly appreciated. rob

This truck should have the tan wire. You have to remove the plastic cover on the passenger side of the firewall, which is labeled with something like "fuse relay center" to see it. The plastic cover is held on with two or three plastic nuts. Unplug the single tan wire, the check engine light will come on, and you can then set your base timing, which is normally TDC on these engines. It's there, you just have to pull that plastic cover to see it.

I would replace the fuel pump and the fuel pump connector, both have problems in this year that cause excessive current draw and blow the fuse and overheat the system. If the relay socket terminals are discolored from heat that must be replaced as well. Of course before replacing any parts have a GM dealer confirm the problems i have guessed are to the cause.

if i remember right its under the hood on the left side. should be a big black box mounted on the firewall. let me know if thats it.

Check your ground cable. It should go to the motor and two the chassi (bolted to a fender).

Look for fuseable links. They always seem to move. They are about a 10 gauge sized wire with a plastic collor on it near the end. There can be some coming off the battery cable at the starter, on a junction block mounted on the firewall (If I remember right your 92 will have a cover on the passenger side firewall and I think they are under that) or near the battery.

Don't just look at the links (the fuse is actually the wire. It melts away when there is a circuit problem), tug a bit on them. They will corrode on the inside of the plastic collor and the wire may not be melted away but the connection inside can be bad.
If a link is bad, DO NOT REPLACE WITH A REGULAR FUSE. I seen people do that and a fuse, like found in the interior fuse panel, creates a resistance. You don't want to turn a 10 gauge wire into a small wire like found in a fuse. Napa auto parts has fuseable link wire. A but splicer and a ring splice would also be needed.

If the links are good then you need to check the bulk head connector on the drivers side firewall. The battery power will go through that inside the vehicle.

pull the dash off theres the heater core on passenger side theres a inlet and outlet hose pull both off remove mountin bolts install new one reassemble dash

look under the dash on the passenger side and you will see the blower motor, unplug the electrical connector and inspect it take special notice of the third pin from the left. they seem to have a common problem in that it melts the feed wire to the blower motor, a replacement plug kit can be found at most autoparts stores.

2wd or 4wd, 1500, 2500, 3500, 4.3, 5.0, 5.7, 6.2, 7.4 ? need information along with email address to send directions to replace starter

little black box to the left of blower motor (2) 7/32 screws holding it heater box with a plug with 7or 8 wires feeding it the plug is probably going to be melted inside

maybe its a wheel bearing? and when you turn it puts extra weight on it and makes it loud. that would also cause your tire to wobble. jack up that side of the truck and see if the tire is loose. if the lugs are tight and you can move the tire then you need a wheel bearing. its very dangerous to drive with a bad bearing cause it could cause your tire to fall off.