Ok guys help 02 Silverado 193000 miles on it replaced fuel pump,filter,regulator,crank sensor,done fuel pressure test (ok) truck cranks up then dies right away doing key code relurn now ?
Check air filter and clean or replace ( IAC ). Did you also clean throttle body ?
Scratch the throttle body answer just read were you did that already.
Ok guys figured it out passcode sensor in column where it plugs in was loose shimmed it and after about six try's it reset and crunk up runs smooth once again gonna put covers back on later just in case thanks guys and God bless
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