5.3Ltr GMC 1999 Sierra pick-up trouble code P0405 EGR position sensor low voltage. I've replaced it twice. Why isn't it staying repaired?
U have a short Something burning it up I would ck tps to make sure you are not getting to much gas .rich idle
An vacuum spray some water soapy water around egr.mist it not spray. Sorry if the ideal changes different problem
Sell it to me or trade u
Looking for a Used Sierra 1500 in your area?
CarGurus has 62,274 nationwide Sierra 1500 listings starting at $1,395.
Search GMC Sierra 1500 Questions
GMC Sierra 1500 Experts