Question about 1997 Chevrolet Blazer

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1998 chevy blazer wont engage the front hubs in 4 hi

1998 chevy blazer won't engage into 4hi and the light on the dash won't light up. have replaced the transfer case motor, transfer case switch and the acuator. There is also alot of cv grease spraying out. it is up on jack stands while we are testing this, any help??

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  • 87 Answers

Check the vacuum switch on the center of the fire wall above the distributer, bypass it to see if the axle engages if so replace it, if not may need a front axle actuator

Posted on Jan 15, 2013

  • Bruce Feb 10, 2013

    Thank you. It was not the vacuum switch but the actual vacuum line to the transfer case. Once I replaced the line everything works again. And the grease is from a bad cv boot.

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6ya6ya
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Posted on Jan 02, 2017

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flacooo1
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SOURCE: 4 lo working, 4 hi stopped working , A4WD never worked

Hi my name is Juan and I do own a trailblazer with the same year 2002 and I read the problem you have let me try to help you Have you try to shift to 4hi with your transmission in neutral ? the transmission needs to be in neutral in order to shift the transfer case to 4hi and the vehicle needs to be completely stooped also is your service 4wd light on?? if the light is on your transfer case needs service and it can be as simple as the switch inside your car or a solenoid that has not been detected by the computer

Posted on Mar 30, 2009

  • 17 Answers

SOURCE: stuck in 4 wheel drive and wont come out.

hey there i cant tell you what you are missing but i can tell you how to disengage the front wheels . ok you have a vacum line that runs right under the battery and a line that comes up from the front diff. to the same place ( you may have to remove batt and batt tray to get full access to this) un bolt it and temporaly put batt and batt tray back in start it up and decompress this and see if it comes out .... you should here clunking noise if it goes back in ... if thats the case just pull that big vaccum line off .... to test get all four tires off the ground and have some one put it in drive but dont hit the gas it should turn on its own ...if that dont work check the cable that runs down to the differental

Posted on Aug 06, 2009

cincinaty5
  • 132 Answers

SOURCE: 1993 chevy 1500 4x4 pickup no power to front actuator

check all wire conections also replace the actuator on the front axle but check for power there first if you have power replace that switch as well .

Posted on Aug 27, 2009

gladys_neal
  • 334 Answers

SOURCE: I have a 2001 Chevy 2500 4X4. Four wheel drive not

Sounds like the chain in the transfer case has broke or the linkage is out of adjustment

Posted on Dec 08, 2009

  • 538 Answers

SOURCE: 2000 blazer 4 wheel drive problem

It's most likely the "four wheel drive actuator" This is located on the front differential housing. It's cylindrical shaped and has a large hex (about
1-1/4") and two wires coming out of it. Usually they short out and blow the fuse but, I've also seen where they just quit working and sometimes they just get slow to work. The "actuator" has a heating element in it and it warms up, some sort gas, causing it to expand thus engaging the front wheels. In cold weather it may take a minute or so for it to engage, so put in four wheel drive and wait for a bit and see what happens.

Posted on Jan 05, 2010

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Have a 1985 chevy s10 pick up & the 4 wheel drive wont engage. I already replaced the solenoid on top of the transfer case, & it still wont engage. I can hear the transfer case engage & I have vacum at the...


Make sure that the vacuum hose connector is connected AND connected correctly at the transfer case and at the front differential. If that is all right and the front differential still doesn't engage, then you need to test the vacuum actuator at the front differential.

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Diagram of stereo wiring in a 1997 Chevy S-10 Blazer


Hi there:
Check this on 1998 Chevrolet S10 Blazer Car Stereo Radio Wiring Diagram:

Car Radio Constant 12v+ Wire: Orange
Car Radio Switched 12v+ Wire: Dark Green
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Gray
Car Stereo Dimmer Wire: Violet/White
Car Stereo Antenna Trigger: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Front Speakers Size: N/A
Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Rear Speakers Size: N/A
Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
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Jul 12, 2012 | Chevrolet Blazer Cars & Trucks

2 Answers

I have a 98 chevy blazer with the 4wheel stuck in high


You will see the motor move when you engage the switch on the dash. The motor is on the bottom of the transfer case behind the transmission. Most likely it's the actuator for the hub lockouts under the battery tray. They wear out after a few years. It could also be the cable that locks the hubs that goes from the actuator to the hub lock in the front differential. Also, check your front differential oil level, if it's not getting oil it won't disengage. Check to make sure the hoses between the transfer case and the actuator are not leaking. If that isn't the case there is a air activated switch ont he top of the transfer case where the air hoses plug into, it has three hoses that go to it. That switch screws in but you have to lower the transmission cross member to get to it. It could also be bad, it costs about twelve dollars. Good luck.

Mar 14, 2010 | 1998 Chevrolet Blazer

2 Answers

2000 blazer 4 wheel drive problem


It's most likely the "four wheel drive actuator" This is located on the front differential housing. It's cylindrical shaped and has a large hex (about
1-1/4") and two wires coming out of it. Usually they short out and blow the fuse but, I've also seen where they just quit working and sometimes they just get slow to work. The "actuator" has a heating element in it and it warms up, some sort gas, causing it to expand thus engaging the front wheels. In cold weather it may take a minute or so for it to engage, so put in four wheel drive and wait for a bit and see what happens.

Jan 05, 2010 | 2000 Chevrolet Blazer

2 Answers

1998 chevy s-10 blazer. 4 wheel drive does not


do u have a lever control on floor if yes check adjustment of linkage if u have the dash switches check fuse and relay than check actuator for proper movement at transfer case actuator has a tendency to stick lube and or adjust

Oct 29, 2009 | 1998 Chevrolet Blazer

3 Answers

What color is positive speaker wire on 1998 blazer


1998 Chevrolet Blazer S-Series Stereo Wiring Constant 12V+ Orange Switched 12V+ Yellow Ground Black Illumination Gray Dimmer Brown Antenna Right Front Front Speakers 6 1/2" Doors Left Front (+) Tan Left Front (-) Gray Right Front (+) Light Green Right Front (-) Dark Green Rear Speakers 6 1/2" Rear Doors Left Rear (+) Brown Left Rear (-) Yellow Right Rear (+) Dark Blue Right Rear (-) Light Blue

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1 Answer

1998 Chevy Blazer 4x4, $ wheel drive won't work (both 4hi & 4lo )


Reset the computer by disconnecting the battery. This should solve this. nutetral is for the four lo only to engage.

Mike

Jan 26, 2009 | 1997 Chevrolet Blazer

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