Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Yes. That is correct. The thermostat is under the upper rad hose fitting that goes to the lower intake manifold. They are a bit of a pain to get at, but I can usually get it with out removing the exhaust cross over pipe. Below is a picture.
need help on a 1999 Chevy K3500 pickup with a 7.4 L