My tahoe dies all the time for no reason. Usually it happens at very slow speeds, idiling, give it gas to turn, back up, pull forward, or sometimes when rolling up to a stop sign it dies. It always starts back up immediately and if i am sitting still, it will idle till I run out of gas and never die. Has anyone ever experienced a similar problem?
01 Tahoe, 5.3L dies at slow speeds, backing up, turning around, etc
- Thread starter Chads93GT
- Start date
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road1will
Full Access Member
how many miles on it
road1will
Full Access Member
have you checked all vaccuum hoses, etc.?
check your air filter (sounds dumb just make sure that and your intake tubing isn't clogged
then check the throttle body see if its got a lot of carbon build up (i would clean it either way with some top engine cleaner, nothing is ever too clean especially at 197k)
IF your car has drive by wire (no throttle cable) check and see if there are any calibration updates
I had the same problem in my Denali and this those 2nd and third steps fixed it, my air filter and tubing was all clear..
hope this helps
then check the throttle body see if its got a lot of carbon build up (i would clean it either way with some top engine cleaner, nothing is ever too clean especially at 197k)
IF your car has drive by wire (no throttle cable) check and see if there are any calibration updates
I had the same problem in my Denali and this those 2nd and third steps fixed it, my air filter and tubing was all clear..
hope this helps
I am going to assume that the dealer has to check it for calibration updates? IT is the drive by wire style. I will check the air filter but I doubt that is it. I have a fram air hog (k&n style, work paid for it) in it that is still pretty clean. I will do some maintenance on it this weekend. I doubt a vacuum line is broken but I will check. I have had busted vac lines on my mustang before and it simply gives you a really irratic idle, etc, and this shows no signs of this. Cleaning the throttle body out would probably be a great idea, but it seems that i will have to get a diagnosis from the dealership about that calibration i guess? thanks for the input, glad im not the only one who has had this problem.
well if you clean the throttle body your self you will save some money and that will fix the problem, you won't die out any more, but the calibration makes it run much smoother after its fixed felt like driving a new truck for me
Well I think cleaning the throttle body fixed it. I can already tell that the rpm's aren't acting irratic anymore where backing up, pulling forward, driving slow, stopping. Granted, some days it would die, others it wouldnt, but I can tell from the behavior displayed tonight when i was TRYING to make it die, and it wouldnt do it. Thanks for the help. I should have know that the idle air bypass had something to do with it.
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