Quote:
Originally Posted by pcogs
I have been having the following problems with my 2005 tahoe intermittantly for over a year
Stability System Disabled
Service 4 Wheel Drive
Traction Control Light on
Sometimes when first starting and for a while after engine would not exceed 1800 Rpms after highway driving this would start to function normal.
I have taken to Chevy twice to get fixed, first they told me a had hundreds of codes so they thought it was my auto car start interfering with it. I had that taken out and for a little while it was ok but I think that was just coincidence. Then i took it back again and they told me still too many codes they don't know what to do.
found this thread and took it in again, this time they said no codes? and we cant replicate. I don't know how that's possible because it's been to the point where all the warning indicators were constant and you cant shift from 2wd to anything else.
Based on Corye advice I told them to just replace the encoder motor and sensor. 1.5 hours and $289 later my truck is finally running like a charm, no warning lights, everything perfect. If his style is "backyard mechanic" it worked for me when nobody else could fix it.
Thanks Cory
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with no engagement of 4wd the encoder is highly suspect since it is the weak link doing all the heavy work.
replace the tranfercase fluid every 30,ooomi with or without any 4wd use as this fluid gets damaged from heat and friction.
this will reduce the encoders work load.
other causes holes in the transfercase,fluid damaged to a black color,wires chewed up by rodents, even holes in the encoder motor housing.
the switch on the dash is a common easy fix.re-solder the switch pins to the circuit board or buy new switch..
to bad you couldn't have cory the GM tech work on it . he is good at guessing not testing..
you know their is a testing proceedure for all this ! GM tech at dealership should have done this.