i have 03 silverado with a 4.3 vortec. the temp gauge was not working along with other gauges so i replaced all stepper motors, all gauges work now except the temp gauge. when you start the truck the temp gauge jumps about a 1/4 of the way over and back down (as do all the gauges, which is normal) but it never moves up while driving. it stays all the way down. i replaced the temp sensor located between the spark plugs on the drivers side. still does not work. is there another sensor i need to replace? or does anyone have an idea? any help would be appreciated.

 

got to checking those new stepper motors and one had one of the wires broke off and wasnt making contact, replaced and works good now

 

Glad you got it fixed!!!!!

 

thanks. it was a puzzler for a while.