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My 4 wheel drive will not work on my 1995 GMC jimmy. Mechanic said it was the cable. I have no idea, so I go on the intenet and buy a ACDELCO US 15721261 Trans Shift Cable
4wd ; 4-speed At (m30) ; Chevrolet (x88) ; Gmc (z88); Years:1995-1996; Per Car Qty:1; from Bestvalueautoparts. You quessed it WRONG cable.
My mechanic said the cable is about 18" to 24" long. Thats it no other info.
Does any one here have an idea what cable I need and where to get it?
Thnaks for any info
Frank
Jon
Only way to fix it is to replace the gear and also the nylon washer in your front differential.
This problem can be caused by poor vacuum not pulling the cable all the way to fully engage or disengage the gear. once its burred it must be repaired. Also check to see if you have a vacuum problem.
Just my 2 cents. I had the same symptoms as you and that was my fix.
The only thing inside the black housing is the connection for the cable. Parts cost was under $250.00 and labor was under $150.00
Unless you have a working knowledge of the differential and parts involved I wouldn't recommend doing it yourself.
Kyle
Thanks
Kyle
thanks for reading and replying,
Jon
I have the exact same issue. Did you ever find out what it was?
Ryan
Thanks Joe
There are two other hoses attached to the same switch just find the empty fitting and attach the hose.
You could also take it back where it was worked on and tell them to do it.
Goodyguy~
Hit 4hi blinks and goes solid as it should, hear the thump but front wheels do not appear to engage ( drove in the wet grass, turned steering and hit the gas and she wants to blow a donut and front wheels do nothing), next I tried 4lo and appears to engage, but when gas is hit alittle it almost feels like the truck slips for a sec and then engages, or I should say feels like it, as I don;t wanna gun it in 4lo. Also let me add the 2wd works flawless.
Give me old chevy 2wd and I can tear it down and put it back together end from end, 4wd is something new... So any help would be greatly appreciated. Paying a mechanic is not a problem money wise... it is just really hard to bring myself to do it.
thanks mike
I've read most of the postings and searched, but didn't see an experience quite like mine. Coming home from vacation, about 250 miles from home, cruising down the interstate at about 80 mph, (2wd of course), heard a faint clicking sound thru the ventilation system. As I slowed down to take the next exit, this became very, very loud. It reminded me of a playing card flicking in the spokes of a bicycle wheel, only metallic (metal on metal) and very loud, and slowed down and then quit as I came to a stop at the bottom of the exit ramp. The clicking returned as I drove to the nearest gas station, where I found this sound was coming from near the transfer case, louder on the passenger side, and occurred in both forward and reverse.
I drove from the gas station to a GM dealer, about a mile (clicking all the way). This is my first 4wd, so I'm not all that familiar with the 4wd workings, but if I understood the GM mechanic, he said my problem was that the encoder motor was bad - the clicking came from this part engaging and disengaging. He didn't have a replacement (thank god $$$), so he disconnected the vacuum line at the actuator located under the battery and plugged up the vacuum the line. I could get home, but 4wd was disabled.
Now, as I understand from reading the posts, the encoder motor is used to engage 4Lo. I don't off-road, nor do I tow anything heavy, so I don't really need 4Lo. And the encoder motor is rather expensive for me, so here's my question. Can I simply disconnect the wiring harness from the encoder motor and reconnect the vacuum line to the actuator located under the battery so that 2wd and 4Hi function without 4Lo capability? Would doing this throw off the TCCM and disable the 4X4 system altogether? I really only want to use 4Hi on pavement with snow/ice, in bad whether, and since the 4Hi engagement system is a vacuum/mechanical working, could I just disconnect the encoder motor AND the TCCM, or would this cause problems with the other computers? :confuse:
Been reading up on the very many likely problems that could be causing a malfunction. This isn't my first 4wd, I drive a jeep xj and wheel it often, the jimmy is my mom's. Anyways, it being midnight, i just went out and unplugged the battery and let it sit for 30 mins. I could hear the sound from the disconnect, I'm assuming, its coming from under the dash, and the 4hi light flashed then went off. After 3 times or so of trying this the lights on the gear selectors dim then go off. I'm guessing there is a combo of Tccm and vacuum problems. But until tomorrow i won't know for sure. My question is, what would be causing the indicator lights to go out, is it more likely the tccm or the dash switch itself?
Thanks for the help chevy electronics experts!
Joe
Edit: Forgot to include vitals, its the np233, 3 button(why can't it just have my trusty 231 behind that 4L60?)
:confuse:
:confuse: