2003 Silverado Check engine light flashing and truck in limp mode

Asked by Garrett Feb 07, 2021 at 11:11 AM about the 2003 Chevrolet Silverado 1500 Extended Cab 4WD

Question type: Maintenance & Repair

2003 Chevy Silverado 1500 4.8L 4X4 check engine
light flashing and in limp mode not sure what’s
going on I was cruising at 65mph and all of a
sudden it started sputtering and then the check
engine light started flashing and it went into limp
mode I tried resetting it by disconnecting the
battery but it didn’t work any tips of what’s wrong
or any ideas of how to fix it I’m not sure what’s
going on with it all my gushes were looking fine so
idk I’m only 18 years old and I’m pretty
knowledgeable when it comes to mechanic stuff
but this problem I’m not sure any help would be
great thank you in advance

2 Answers
10

Damon answered 3 years ago

Mine is a 2000 4.8 vortec, the check engine light would come on and go off, then it stayed o and started to idle rough and then the light started blinking and it developed a mess I replaced the MAF sensor the idle air valve with new plugs and plug wires in it and now the light stays on and it idles pretty good but when you put it in gear it develops a mess what do you think about that

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