2003 Chevrolet Silverado 2500 HD Q&A
2003 Chevrolet Silverado 2500 HD Question: Replaced throttle body and now mpg has gone down.
I had a problem when the (low engine power) would come up in cool conditions but turn the engine off and it was ok. I replaced the throttle body as advised by repair pal and that problem is cured. I replaced it with an AC Delco body but now I seem that my mpg is down a little. Does the computer have to be reprogramed for this throttle body. Other than poorer mpg the engine runs great. Just wondering???? - maddog1000
What is your MPG now? - PARTS GUY
no programming required for replacement part. did you replace the throttle body gasket?? Roy - mastertech6371