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    1995 4x4 Yukon Several Issues

    1 / 3. I'm no expert, but 1 and 3 sound like a transmission rebuild to me. 2. sounds like a fuel pump most likely. 4. As far as the radio / battery issue, I second Drakon. Make sure your remote wire is hooked to switch power or the remote wire (blue from aftermarket head unit), not...
  2. D

    1995 4x4 Yukon Several Issues

    1 / 3. I'm no expert, but 1 and 3 sound like a transmission rebuild to me. 2. sounds like a fuel pump most likely. 4. As far as the radio / battery issue, I second Drakon. Make sure your remote wire is hooked to switch power or the remote wire (blue from aftermarket head unit), not...
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    5.7 tbi Running Cool and No Heat

    It was actually super easy. You dont have to pull the dash. Just drop the bottom cover on the heater box, under the dash. It’s held on by like 5 or 6 metric screws. 5mm I think, but not sure if I’m remembering the size correctly. I’d recommend picking up a foot each of 5/8” and 3/4” hose at the...
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    5.7 tbi Running Cool and No Heat

    Thanks for this answer. I figured out pretty quick after my original post that the open position was actually the normal position for the valve, but I still hadn’t figured out what sent the signal to solenoid.
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    5.7 tbi Running Cool and No Heat

    Problems solved! Heater core was definitely plugged. It was only getting hot at the inlet. Stuck a new one in, and heat works perfectly. I also pulled the thermostat and retested it, with a thermometer in the pan. It started opening at like 155. I put in a new one, and the engine is running at...
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    5.7 tbi Running Cool and No Heat

    Thanks for the reply. Yes, from what I've read the 195F thermostat should be correct. My outlet heater hose is warm-ish, but not nearly as hot as the inlet, so I think I may stick a heater core in this afternoon. It can't hurt, and only costs like $35. I guess we'll see what happens.
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    5.7 tbi Running Cool and No Heat

    Hi Everyone, new to the forum. I have a 95 Yukon, 350 tbi. It's a new project I'm fixing up to use as a hunting truck. I have a couple of issues with it, and I'm looking for some suggestions. Symptoms: 1. No Heat 2. Running cool (160 F) What I've done so far: 1. First thing I did was pull...

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