Question about 1993 GMC Sierra K3500

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4 wheel drive doesnt work

How do you know if its the transfercase or frontend that is the problem

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With the car jacked up all four wheels off the ground, please make sure it is secure on axle stans or a ramp. handbrake off engine NOT running try to turn the front propshaft, this is the piece that conects the transfer case to the diferential at this stage you should be able to determine the fault. come back to me with the results.

Posted on Dec 22, 2008

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2 Answers

Transfer Case stuck in 4 wheel drive


To Troubleshoot Transfercase stuck in 4wd issue.Click the link below and follow the details:
http://www.allcarhelp.com/2015/04/transfer-case-stuck-in-4-wheel-drive.html

This will help.
Thanks.

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problem could be transfercase shift control module.or check 10 AMP fuse to the front axle switch since the transfercase module will send a signal to engage front axle then transfercase encoder is mounted to the shift motor so the transfercase control module control shift control motors also transfercase speed sensors.the transfercase assembly complex system work on since every thing electronic controlled.

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sound like you have the automatic four wheel drive system where the transfercase control module controls the 4WD system if you dont see shifter knob on console you have automatic 4WD drive system.

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the samurai doesn't have 2L it has 2H.
there are 4 modes on the transfercase. 2H, 4H, N and 4L.
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2 Answers

I have a chevy pick-up truck the year 1995 Z71. I put the truck in 4x4 high for the first time this year and did not get a light near the gear lever nor did it go into 4 wheel drive. I check the transfer...


check on the frontend, some of the chevys have an electricl controlled vaccum actuator that locks the frontend in, it will be close to the punkin. if the vaccum line is off or has a hole in it, it will not engauge in 4 wheel drive. hope this helps

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1 Answer

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You can't put the transfercase in nuetral the car won't move its prolly a all time 4-wheel drive if there isn't a 2-wheel sign on the gear shifer then it's a all the time 4- wheel drive

Apr 20, 2009 | 1993 Jeep Grand Cherokee

1 Answer

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sounds to me like the transfer case clutches are worn out. also the fluid could be low or dirty. try draining and refilling the transfercase with clean fluid. if it is still not working after driving it around for a few miles then you may need to replace or overhaul your transfercase

Jan 10, 2009 | 2004 Jeep Grand Cherokee

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