elusive7283
Newbie
Hello everyone and I am glad to be a part of the community, pleasure to be here! This is my first post here and I do apologize if there is a thread on this issue that I'm having on my 1992 c1500 OBS. The problem that I am having is that my service engine soon light turns on only at high speed, when I drive around town the light doe come on at all. I have changed the map sensor and tps sensor but I'm thinking the EGR/EGR Solenoid, or the o2 sensor also need to be replaced. Truck runs awesome and no idle issues outside of the annoying service light, my truck has 157k on it.