denes states: June eight, 2008 at four:28 pm The encoder motors normally fail to the 2002+ autrotrac (four 4wb buttons) blazers and s10 p/u’s. A printed circuit board Speak to “cooks out” Within the encoder motor confimation switches. Just so you understand, the A,B, and C switches tell the TCCM what general shift postion they’re in. the P change is often a singal for the TCCM when to prevent the motor (remaining park postion). I'm quite certain A is 2wd, B is 4wd Hello, and C is 4wd minimal. Should you’re just a little clever w/ electronics, You may as well correct the TCCM problems w/ new relays.
Extend a string. By having an assistant, have a bit of string or wire and extend it involving the strains about the entrance of your tires, Despite the spindle, and measure the gap over the string.
I, myself, don’t know of any vacuum located with the transfer circumstance, but I'll check out to see to suit your needs (I have a transmission shop while in the spouse and children — I just termed, although the knowledgable one is not really however in). The TC is rather close to the front in the auto — do you think you're guaranteed the vacuum just isn't coming from the firewall place?
Each vehicle I passed in the ditch, I just held praying my 4 wheel drive would occur on… but no such luck. The real pisser Here's, I attempted it that early morning and all was fine… now, when I would like it, nothing at all!
We now have 4WD. My spouse is amazed with me and my hat is off to you sir. You saved us large time. Will gladly fund your retirement account for what you might have saved us. Allow me to understand how.
Hopefully, this could set you off in the appropriate path. Make sure you allow me to understand what you discover as it could be of use to another person here in the future.
That’s awesome! Nicely, I think you’ll go ahead and take cake — I don’t Imagine we’re gonna see a repair service for virtually any less than seventy five cents! Very good do the job!
PS – I actually hope I’m not way off foundation here and sending you with a wild Goose chase, however it’s really hard once you can’t begin to see the motor vehicle.
I ment to say, I'd my transmission rebuilt two months back as well as 4wd labored then. I set my Blazer on jack stands and began tracing the hissing sound (air leaking?). I’ve discoverd the hissing sounds is coming in the transfer scenario.
The issue is when I try and go up my hill over a snow coated street the only real tires that have interaction would be the rear. I can listen to the hardware adjust underneath the truck amongst 2H, 4H & 4L – but the entrance axel(s?
My mechanic is not able to align my entrance since he won't know how adjust aftermarket unibal A Arms. Must I visit a store that features a Personal computer to point out how to proceed?
Lessen the car. Once you decreased the car to the ground, push down on the car higher than Each and every wheel some occasions to enable the car or truck to settle.
two) the vacuum swap also communicates Using the TCCM — no vacuum as well as your lights will probably flash constantly although making an attempt to engage 4wd, but received’t have interaction until eventually all 4wd factors, Again, communicate with each other.
Even so, following playing Click Here To Investigate around some additional, I discovered that there was a foul vacuum change in addition to the transmission powering the transfer circumstance. (I are actually wanting to article photos.. but it really isn’t permitting me.) — see below!