First off, let me say I’ve enjoyed reading post from this forum, and learned quite a bit. That being said, I’ve read everything I can get my hands in an attempt to fix my problem, but maybe I’ve missed something. I have an 86 K10 Silverado, I purchased it in 01 with a crate motor already installed. For a while my temp gauge has been pegged, I replaced the gauge, I replaced the sending unit twice(removed Teflon tape), but I still haven’t found the exact one I removed, but am told the two I purchase is what the computer calls for. I’ve ran a new wire from the gauge straight to the sending unit, and I’ve given it a new ground. The only thing the dash/circuit board gives me is my voltage source. I’ve also replaced my radiator and fluid, changed my sending unit in the goose neck that feeds my choke, and my thermostat. I noticed some grounds were missing so I made a grounding circuit and still nothing. I’m stumped, now neither the old gauge nor new gauge will move off cold(originally it was pegged) Heat works great. Any help or suggestions appreciated, sorry for the long post, as I know it’s already been covered.