Examining your very first feelings on it, And that i’d must say I agree along with you. Does the 4Hi light occur on whenever you to start with switch The true secret to your ON position without having aiming to start out the car or truck?
If I am not mistaken, you cannot obvious codes by yourself — you need to have someone do it using a scanner (ie. SnapOn). I could possibly be Incorrect, but I don’t Consider so — I have a tranny store in the family members which includes a person, so I’ve in no way experienced the necessity to analyze it any even more.
You might also unplug the TCCM and tap within the encoder module to view if it could be caught (a heat garage wouldn’t hurt either!) — depart the TCCM unplugged for at least 2 minutes, then plug it back again in. Then, convert the key on to off five situations, then to on and try it.
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Now, You will find there's sensor around the entrance, correct hub to detect when it is engaged — I have not attempted this, so I don’t know 100% of course, but If your front, right hub isn't engaging, the method ought to detect this instead of enter 4WD.
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Regrettably, I haven't had experience using your distinct challenge — however it does seem like it may well both become a) the identical difficulty as I used to be having (ie. interior gears / forks in the transfer circumstance not allowing total shifting from one particular manner to another), or b) a entrance axle switch issue (which is found inside the Electric power Manage Module (PCM) — but that’s about all I may help you While using the PCM as I don’t even know in which it’s Situated).
So, without having bodily eradicating the encoder motor module and manually shifting the Transfer Scenario into 2Hi, unfortunately, it’s caught in 4WD until finally you can find it to some mechanic.
Hey Doug — thanks for the knowledge! That makes loads of perception — now, if we could only discover the switch! If you think about it, the swap you talk about could just be the basis of the issue for a handful of those who’s 4WD won’t engage.
PS – nope, no other name for your Encoder Motor, which i know of. It’s Situated over the side with the transfer situation and it Exactly what does the physical shifting amongst “modes†(2Hi, 4Hi/4Lo).
In summary, wheel alignment is a crucial operate that needs to be completed not less than once a year. The truth is, it may count on the driving practices, road ailments, and many other variables.
Raymond Dunne claims: January 7, 2008 at 10:27 am Properly immediately after alot of your time on my 2001 Jimmy 4wd process I am nevertheless stumped. Started out that has a clicking sound from front finish so I Try These Out checked vacuum actuator and it’s carrying out it task given that I loosened up the cable. Truck will not go into 2hi or 4lo so I pulled the Manage module and checked wiring. Big orange wire on power connector was lined in corrosion and a single wire on 32 pin connector was corroded.
Thanks on your input, it had been an awesome put to start. I hope this may well have the capacity to aid any Other individuals with related circumstances.
I don’t want to give you any bad information, however it sounds very similar to what I just went by… and it absolutely was the Transfer Case that needed company… badly. My Blazer in all probability only has ten-15 hrs about the 4WD procedure, still the “forks†Within the TC were badly worn and allowing for my gears to drift, which created signs or symptoms such as you describe (among Other individuals).