Question about 1999 Chevrolet Blazer

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4wd is stuck in 4low was going to try to disconnect the 4wd so i could get it back to 2wheel to be able to drive it how do i do this

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I HAVE A 97' OLDS BRAVADA. I NOTICE THERE IS A LOUD CLICKING SOUND COMING FROM THE FRONT AXLE. (FULL TIME FOUR WHEEL DRIVE). I NOTICED THERE'S A BROKEN VACUUM HOES. COULD THIS BE MY PROBLEM?

Posted on May 13, 2011

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Its a vacuum opperated system. There is a vacuum line on the transmission but ufrortantly the transmission will not work correctly with this disconnected. That controls what is called an actuator its a vacuum moter its located under the battery tray and this pulls on the cable that makes it shift in and out of 4 wheel drive.Try disconnecting the cable at the actuator and pulling back away from the engine this may pull part # 9 the carrier conector out of the out put shaft part # 23 and disengage the 4 wheel so you can drive in 2 wheel with no side affects although you would have to replace # 9 or # 23 or bolth to make the 4 wheel work again but then again if you do this it may workthe gears just got bound up and it might work but i wouldn't push my luck with it until it was apart and could inspect the parts.

Posted on Dec 29, 2010

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2 Answers

My2002 chevy wont come out of 4 low


Did you fix the E brake problem? Replace the rear cables or cut them at the rear brakes. To much pressure on the T case can keep it from shifting. Especially from 4 low.

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we dont know what 4wd option you have , so how can we answer you. Impossible that be.

part time 4wd PT
or full time. awd
do not drive part time, on non icing pavement, are you on dirt?
not posting road conditions also makes all answers wrong.
if you attempt to use PT or lock on dry pavement you will damage the car.
ever read the operators guide yet>?

what does stuck mean
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Start with the simple and check the fuses and replace any one that has gone bad. Pay attention to the 4WD fuse and replace it is it has gone bad.
Thank you for using fixya and keep me posted, be glad to help you get your Blazer running 100% again soon.

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it is either the control switch or the actuator. look if light is flashing on push button switch. if so it is stuck. you can check actuator on front axle, to watch and see if it is moving.

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For a temporary fix so the car can drive, remove the fuse for the four wheel drive. it won't actuate the four wheel. The car is always in 2wheel drive. the fuse is located under the hood, the very right side of the of the fuse box, the third fuse up from the bottom. This can be checked in the owners manual. When I need four wheel dr I place the fuse back in. I haven't fixed the problem yet but can drive it 2wheel on the road. think it is the control module for the four wheel dr located under the dash board behind the glove box. Dealer part for $450, I would rather install and remove a 10cent fuse

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