Question about 2002 Chevrolet TrailBlazer

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Four-wheel drive will not work and is not transfer case, could be a fuse?

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I was driving my 2004 Trailblazer about 40mph in AWD mode and the left front wheel locked up and broke that axle behind flange at the diff./oil pan side. The axle to wheel is intact, but the seal is gone and fuild came out. Drove back home at 10mph as axle moved as wheel turned. I'm thinking bearing went bad and locked up. 102,000miles and I use AWD in winter alot.

Posted on Jan 01, 2010

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Where is the fuse located under the hood, i have the same problem also with the 4 wheel drive not working. nobody wants to look at it

Posted on Dec 15, 2009

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I am having the same problem right now. I took it to two places and they both said the same thing. Transfer case is working but the front wheels are not engaging. Problem - Front differental actuator (part#12471631) through Chevy dealership $131.53, schucks (part#600103) $85.99

Posted on Dec 15, 2009

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IT COULD BE A FUSE THERE ARE FUSES UNDER THE HOOD FOR 4 WHEEL DRIVE ALSO IF THAT DOED NOT WORK CHECK 4 WHEEL DRIVE SELINOID

Posted on Dec 13, 2009

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1 Answer

1990 GMC suburban actuator and fuse location. There is not one on front differential and no place for fuse in fuse block. 4 wheel will not engage. No owners manual


The actuator will not be on the front differential or drive line, it will be on the transfer case, which is mounted behind the transmission. Follow the front drive shaft back from the front differential, and the component at the rear of the driveshaft is the transfer case. That is where four wheel drive is engaged/disengaged.
I'm not familiar with your vehicle, but if you have a separate lever to engage 4wd, there will not be a fuse for the actuator - it is a manual system. If the 4wd is selected electrically, check that all wiring and connectors on the transfer case are in good condition.

Sep 25, 2016 | 1990 GMC Suburban

3 Answers

How to determine or test why four wheel drive stop working


Check all applicable fuses. If you don't find a bad fuse, you would need to check the 4x4 actuator underneath

Feb 03, 2015 | 1998 Isuzu Rodeo

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Four wheel drive doesn't work


Its the actuator or a fuse or wiring.

Feb 16, 2014 | 2004 Ford Escape

1 Answer

My 4 wheel drive will not engage and the 4 wheel drive service light does not come on. what could be the problem/


check your four wheel drive fuse.if its ok.check for vaccum to your transfer case switch if it is vaccum operated.if it is electrical check for b+ at the transfer case switch.if there ok check for b+ at the front axle acctuator.if its ok it is probably your transfer case module.

Jan 24, 2011 | 2000 Chevrolet Blazer

1 Answer

My four wheel drive is not working. i replaced the switch on the dash. tried it and all it did when i hit 4-hi both 4-hi and 4-lo blink a few times the it goes back to 2 wheel drive. it did stay in 4-hi...


It's the transfer case motor.I had the same problem exactly and replaced, now it works great. Part is about $100.00 ( aftermarket ) .Ifyou are going to replace yourself you will have to remove front drive shaft and remove yoke from transfer case with an impact wrench for clearance to remove transfer case motor . When you put the new transfer case motor in make sure you line up slot with grove in transfer case motor. Good Luck.

Jan 03, 2011 | 1997 Chevrolet Blazer

1 Answer

Four-wheel drive not working. No light on swtich. New transfer case motor. Checked the fuses and the four-wheel drive switch. What can it be?


Was the transfer case fluid changed every 50K miles? This very important on these trucks. The Transfer Case Control Module (TCCM) could be at fault, especially since you have no lights on the selector switch. Is the Service 4x4 light on? When you switch from 2H to any of the 4 wheel drive selections, do you hear any actuator noises coming from under the truck?

Dec 07, 2010 | 2003 Chevrolet TrailBlazer

1 Answer

Four Wheel drive not working. Blows fuses.


Hi:
Your four wheel drive push button system has only 3 components, so there is a way to narrow down what is blowing the fuse:

the system includes the push button panel and indicator light, the shift control module, and the shift control motor.

The shift control motor is the only part that can draw enough current to blow the fuse. If for some reason the transfer case is jambed up, that could blow the fuse too...So if you are planning on attempting repair yourself:

first, unplug the connector off of the shift control motor, and see if the fuse still blows.. if not, then remove the shift control motor from the side of the transfer case and plug it back in to the harness and see if the fuse blows. If so, then the shift control motor is bad, if the fuse doesnt blow then you need to check out your transfer case.

Dec 08, 2009 | 2000 Chevrolet Blazer

2 Answers

Transfer case locks into low gear but front wheels do not pull


You have to have your front hubs locked in for four-wheel drive to work

Jun 10, 2009 | 1992 Jeep Wrangler

1 Answer

Transfer case fuse blows when engaging four wheel drive.


Hello;
Sounds like yoou have a short either in the switch pod or in the 4wd electrics. Check for pinched wires or bare wires grounding out at the front axle and at the transfer case.
Thanks;
Rich
RPM Northwest

Jan 20, 2009 | 1996 Chevrolet Tahoe

4 Answers

2001 Chevy Blazer 4 wheel drive


The four wheel drive systems in these vehicles are simple. The push button controls the four wheel drive computer. The computer tells the encoder motor (on transfer case) to shift. When the transfer case shifts there is a vaccum switch on the transfer that is activated which sends vaccum to the accuator under the battery. The accuator pulls a cable to lock the front axle in. This covers all s series trucks and suv's with push button four wheel drive but not with auto or all wheel. Now to answer some questions. If your push button is lit up but will not go in to four high you should try to reset the four wheel drive computer. To reset pull the courtesy light and atc fuses for sixty seconds install fuses then cycle key on and off 5 times. If your transfer case shifts but your front end does not lock in check for vaccum at the switch on the transfer case in and out. If no vaccum out replace switch motormite number 49315 at parts store. If you have vaccum out check accuator.

Jun 02, 2008 | 2001 Chevrolet Blazer

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