Quote:
Originally Posted by mrsbb
the mechanic I have it at now can't figure it our either--its a 5.3 --133,000 miles and I will have to get the codes from my son . Needless to say he is not in a good mood so might be a day before I can get them. He is ready to sell it for what he still owes on it.
Mechanic thinks its an electrial problem
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this is a well known issue . call gm repair shops in your area and find one that knows this issue. this is easy repair and not too expensive even if this is the TAC which is defective. this is very easy to fix.
just because one dealership has idiots does not mean the others have idiots. we have all been screwed by them at one time or another. since the internet has arrived their scams are usually revealed to all in a very short time.
just have them replace the throttle body as this has the TAC mounted in it. it costs about 225.oo..or you do it. then if you have driveability problems it must have the relearn proceedure done .
all this is is a variable resistor. when the resistance is not correct the voltage changes improperly . the computer then throws you into reduced power so you don't go down the road like a runaway TOYOTA...................