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Old 02-17-2003, 10:44 PM   #1 (permalink)
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95 Chevy 4wd quit working...

I've got a 1995 Chevy K1500. I used the 4wd back in deer season, then didn't use it for about 2-3 months. I went to use it the other day, and nothing worked. Not even the lights on the t-case shifter panel. Did I blow a fuse somewhere? Anybody have this problem before? -Wes
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Old 02-18-2003, 05:49 PM   #2 (permalink)
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The soleniod on the front axle probably quit working. First shift the t-case into 4wd and make sure the front driveshaft turns. If it does go to the front axle and look for the soleniod to engage the axle disconnect follow the wiring to the connector unplug it. It is a 2 wire connector. Use a test light to check for power and ground at the wiring harness side. If you have power and ground the axle disconnect soleniod is bad.
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Old 02-18-2003, 07:11 PM   #3 (permalink)
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Im not positive, but i belive it would be locked in by vacumm. It is at the prime age for the vacum lines to be rotted and broke. If it isnt the vacum lines, might check (first) to see if the vacumm pump is working. Mine is located right under the battery box.
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Old 02-18-2003, 11:09 PM   #4 (permalink)
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The solenoid would make sense as far as the 4wd not working, but I don't see how it would cause the display light on the t-case shift indicator to go out... Maybe I better start checking fuses first, then work my way down from there.

Also, I don't think these trucks are vacuum locked. If my memory serves me correctly, aren't they electrical/thermal actuated hubs?

Whatever it is, this is a prime example of why I'm selling my '95, and I'm gonna start driving my '75... simple, reliable, and easy as hell to work on (plus I wanna motorcycle now ).
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Old 02-19-2003, 04:40 AM   #5 (permalink)
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The fullsize trucks are not vacuum actuated. The light will not come on until the soleniod engages the front axle. This is a very common problem on the chevy trucks.
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Old 02-20-2003, 08:59 PM   #6 (permalink)
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I'm not talking about the little orange part that indicates the front axle is locked. I mean the entire floor indicator will not light up. You know when you turn on your headlights, and the t-case console lights up? Not in my truck.
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Old 12-26-2004, 10:49 PM   #7 (permalink)
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Its the solenoid.If it doesnt lock in the console light wont come on.When the fluid leaks out of the solenoid it cannot heat up to expand into gas,therefore not pushing the solenoid to engage.
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Old 12-27-2004, 03:11 PM   #8 (permalink)
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Get a posi-lock to replace that solenoid,works almost as good as hubs. That is what I used when mine went. All mechanical and easy to install. I still prefer hubs though.
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Old 12-27-2004, 04:35 PM   #9 (permalink)
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4wd

GM has a T.S.B. that list a "fast engage accuator and updated harness for these trucks.........I'll look it up for ytommorow at work and give you th part no's

Rick
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Old 12-27-2004, 04:40 PM   #10 (permalink)
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I had problems with mine before I went SAS. Anyway until I did that I looked at fuses replaced them, replaced solenoid, and when it all came down to it it was none of that crap, the solenoid wires ran up to the wire loom buy the starter and I guess the exhaust got hot enough one day and melted the damn wires that run the solenoid they would short out on the frame and when I would try to engage 4x4 it would pop the fuse and then the lights would go out. I just cut the junk wire and replaced with new 12 gauge wire. It worked fine after that. Now I got lock outs and dont have to worry anymore about some damn wire. Just my .02
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Old 12-28-2004, 05:20 AM   #11 (permalink)
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GM 4wd t.s.b.

Okay found it! bulletin # 76-43-01A

actuator p/n 26060073

harness p/n 12376316

parts are available at local GM dealer

hope this helps

Rick
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Old 12-30-2004, 11:58 PM   #12 (permalink)
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Man, I forgot all about this thread! I've already had about 4 different trucks since I posted this. The '95 got traded in on my wife's Yukon (I let the dealer worry about it).
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