I have an ’02 Chev 2500 having a manuel 4X4 shifter. My difficulty is that 4hi won’t interact. 4lo seems to function just high-quality, axle engages, lights within the dash arrive on, I'm able to listen to front axle actuator partaking, but when I check out 4hi very little looks to happen.
You put these strings parallel to the edges of your automobile pulled taught and using a modest plumb bob plus a ruler or gauge board, measure the distance from your thrust line string where it exits the back of the vehicle to one side outer string utilizing the plumb bob. Take into account that distance and transfer the ruler towards the front, and do a similar detail, changing the front jack stand to try to receive the gap precisely the same. Repeat until finally you might be pleased which the two strings are parallel. Then repeat for one other aspect of the vehicle. You'd like your exterior strings to be about nine inches away from a wheel centers so that you can change your front wheels with out hitting the strings. Revealed down below is really a pair of pictures demonstrating using a plumb-bob (and dial indicator holder) to insure the strings are parallel (click on for bigger visuals).
The TCCM clicks and we can listen to a motor running if we drive the 2 high button though the two large mild flashes after which goes off. I'm able to’t get in to the mechanic for numerous days. My husband and I would want to know If we unplug the wire harnesses with the TCCM and go away them unplugged until I could possibly get into the mechanic, will that hurt anything? Thanks for the help
OK, so how the heck am I going to take care of this? I am able to only imaging what GM would choose to do (examine as “harness alternativeâ€â€¦ $$$$$$$$$$$$$$). And from asking around about getting a alternative plug, my only solution could be a scrap garden.
Hmmm… it’s difficult to say — it may be as simple as the encoder motor sign lines becoming corroded/weakened (check the schematics in the initial publish), or it may be the transfer case itself. In case the lights work as they need to, then this tells me the 4WD method is partaking, performing what it need to. I believe the transfer case isn't shifting thoroughly. As I said to some poster above, it might be time to get your transfer situation checked by a tranny shop.
Mounted that and nonetheless no 2hi. When I try to alter from 4hi to 2hi I am able to listen to the encoder motor & vacuum solenoid about the firewall do their occupation as well as the Management module clicking so I presume it’s performing it’s occupation. I have 2 lights on sprint resulting in get worried, ‘Service 4wd’ & ‘ABS’. Would the abs technique fault avert it from heading into 2hi? I am aware your not a mechanic but Have you ever any details for me?
Fundamentally, exam each in the strains — If they're all incredibly hot while in 2Hi, then any time you test to alter to 2Lo, among the strains really should go reduced (0VDC) — the same ought to happen with 4Hi. So, if you try to engage 4Hi and you simply’re absolutely sure There's ability at pin five (4Hi button sign), and none of the strains adjust when endeavoring to improve to 4Hi, I'd suspect the TCCM. In the event the encoder sign line DOES transform, then the transfer situation encoder motor module is undesirable.
2 Rapid visual inspections could fix your issues with the 4 wheel travel not Functioning, flashing lights, wont go into 4whl very low. I realized alot reading through this website and wanted to advertisement the onfo I received and the outcome I got in about 30min.
I’ve attempted halting and putting it in park ahead of switching and, Though this did do the job many of the time, not each time. Also, over the time it's going to take Check out here to change, the truck tugs slightly to the ideal. Identical to it had been a little bit outside of alignment. Nevertheless, immediately after it switches, the tugging stops.
Visitor claims: December 16, 2008 at six:41 pm properly i brought my truck in and explained to them they might exchange the encoder motor, unsure what was specifically Incorrect with it, they stated it had been enguaging only fifty percent way then kicking back again out. nicely not sure what could lead to this, i requested them to examine all wires towards the tccm and find out In case the wiring could possibly be the situation, they usually mentioned that once they fixed my tccm very last calendar year they must have also changed the encoder motor.
I'll go out and take pics right before I depart for operate this early morning or I'll fail to remember again. I will try out to get a fantastic shot of the connector to assist you Track down where the wires go. No becoming wise in this article, but you *really should* have the capacity to see where they go… simply because there will certainly be a hole where the wire must go.
It seems like the gears are engaging while in the transfer circumstance but I don’t listen to the actuator participating and the lights about the sprint don’t occur on. Any strategies?
I have Chevy 2001 Blazer. The challenge I had is the fact I am able to’t turn on the 4Hi. So I went to dealership. The mend costed me $900 to interchange the TCCM.
Basically, it seems like the procedure is examining the neutral swap and may only actuate in neutral. 4Lo is purported to function by doing this, but 4Hi need to turn on the fly.