water temp does not stay up after thermosta opens up first time
start truck - warms up to 190 stat open gauge drops and goes back up to about 165 to 170 then swings back down this keeps on repeating. radiator has been changed stat has been changed. Gas consumption has been bad, I know water temp has to be up and stay for normal running. got for sale sign in front of rad to help hold temp up. any help would good.
I think you need a new thermostat.
Sounds like you have a lower temp thermostat in it.
thermostat in backward?
Looking for a Used C/K 1500 in your area?
CarGurus has 6 nationwide C/K 1500 listings and the tools to find you a great deal.
Search Chevrolet C/K 1500 Questions
Chevrolet C/K 1500 Experts
Related Models For Sale