Properly, Enable’s start with the most obvious trouble — the “leaking air” sound. Probably that is a vacuum line that has either occur off, or is damaged. There are actually a few places This may happen — nonetheless, Listening to it With all the drivers door open is probably an indicator that it’s coming possibly within the mainfold, or perhaps the 4WD vacuum swap (pictured earlier mentioned, Situated about the firewall).
Can be a TCCM issue, encoder motor difficulty or a problem in the transfer case — all of which has been included right here.
Range seven is the culpret in two on the blazers i have worked on its hardned steel so usually do not try to make 1 out of any washer it can fail. GM sells this washer in what they call a washer kit it consists of seven, 20, and 24. If anybody has this problem its an easy take care of so you dont even have to get rid of the diff, just the axle tube, but youll have to get rid of the halfshaft 1st this correct took me just over an hour to complete.
Nicely, do what it is possible to and allow me to know — And that i’ll do my best to help you through it — I’d prefer to see you fix it too! Regards;
) — Check out that fuse! (Fuse #8, I believe — it’s NOT outlined as acquiring anything at all to carry out Using the 4WD process — I found that from the schematics.) You'll find 3 fuses that i'm mindful of getting to accomplish While using the 4WD procedure — on under the hood (20A), one particular within the dash fuse paned (10A) and the other could be the courtesy lights (15A, I think).
This might or couldn't be relevant to your dilemma, but something I am able to let you know is for getting it checked out ASAP.
Incidentally, the vendor informed me that 4Lo usually cannot be turned on Until you set the vehicle in the neutral. If someway auto goes into 4Lo by alone, just place it within the neutral place, and you will change out 4Lo.
The challenge is Once i make an effort to go up my hill over a snow lined street the sole tires that have interaction will be the rear. I am able to listen to the components modify beneath the truck among 2H, 4H & 4L – however the front axel(s?
Sad to say, I don’t know the answers to most of your queries — I'm able to guess, but that’s what it’s destined to be, a guess.
As I said to your past poster, if you want to enter into it, get rid of the encoder motor within the TC and after that test to have interaction the various drive modes — and view the motor to ensure it’s shifting in equally directions (it should arrive at a cease in three various positions, for your three drive modes — mark where it is actually when you start so that you can place it again there if all else fails!
In the event you listen to the press of your TCCM, that informs you that the relays are Doing the job and are attempting To place the encoder motor in gear. There are numerous explanations for this to occur, damaged/leaking vacuum lines to start. The encoder motor wires can be bad. You will find there's “plastic bushing” that keeps a “fork” in the transfer scenario from the placement (properly, the fork keeps the gears in the correct posture)… When the plastic bushing is worn, it might cause the transfer scenario not to change (this happened to me, but the signs were the process would change to 4Hi/4Lo, which has a massive clunk, and it was quite challenging to get it back again outside of 4WD.)
Sherry says: September 22, 2008 at three:fifteen pm I actually want I found your web site news in advance of I replaced my tccm. I are in Canada and my 4wd stopped Operating. I've a 2003 blazer and where I live 4wd can be an absolute need to. I took it to a shop and they might not decide the trouble, so then I took it into the dreaded supplier. They gave me a estimate of $1800.00 to interchange my encoder motor and transfer case Regulate module. I undoubtedly couldn't manage this so I took the estimate and located the elements on ebay, then I took it to the 1st shop and paid them $200 to set up every little thing.
I am getting a problem With all the four×4 on my 2001 Chev Blazer. I was looking at your weblogs and I picked up a couple of recommendations on the challenge, but I nonetheless can’t appear to get it far too do the job. At first it had been generating a clicking seem so I took it in for the store and also the mechanic managed to have it to return into 2HI but suitable after that when I attempted to switch from 2Hi to Car trak it went proper back again into four Hello.
Generally, this will likely emulate the button being pressed and may set off the TCCM to engage 4Hi. If it does not, the problem is for the TCCM, most-most likely. Yet again, Test pin 5 in the TCCM. You may additionally desire to test applying electrical power to pin five immediately at the TCCM and find out if it engages 4Hi.