Question about 2001 Chevrolet Blazer

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My 2001 Blazers 4Wheel drive wants to go into 4Hi or 4Lo all by itself from 2Hi... i have the fuse pulled to keep it in 2 Hi but its winter time here in Buffalo and i need my 4WD

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The front differential has a vacuum actuator on it. check to see if the vac. hoses are connected to it.you may need an actuator.

Posted on Dec 12, 2009

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Posted on Jan 02, 2017

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1 Answer

Error message repair 4wd


I guess you probably don't know what transfer case you have ?
SERVICE 4WD
Refer to
?€¢
Transfer Case Description and Operation in Transfer Case - NVG 149-NP3


?€¢
Transfer Case Description and Operation in Transfer Case - NVG 246-NP8


?€¢
Transfer Case Description and Operation in Transfer Case - NVG 261-NP2


?€¢
Transfer Case Description and Operation in Transfer Case - NVG 263-NP1


The NVG 246 EAU provides 5 modes, Auto 4WD, 4HI, 4LO, 2HI and Neutral.
The four manual mode, or range gear positions, of the NVG 261 transfer case are:
?€¢
2HI - 2 wheel drive high range


?€¢
4HI - 4 wheel drive high range, part-time


?€¢
4LO - 4 wheel drive low range, 2.72:1 gear ratio reduction


?€¢
N - Neutral, 4 wheel


The NVG 263 transfer case provides the driver with 4 manual mode/gear positions:
?€¢
2HI - 2 Wheel Drive high range


?€¢
4HI - 4 Wheel Drive high range


?€¢
4LO - 4 Wheel Drive low range


?€¢
Neutral


With the info I've given you ,you should be able too now !
There is probably a code stored somewhere !
DTC B0790 DTC B2725 DTC C0300 DTC C0305 DTC C0306 DTC C0321 DTC C0327 DTC C0359 DTC C0374 DTC C0379 DTC C0550.

Jan 31, 2015 | 2004 Chevrolet Silverado 2500

1 Answer

97 Chevy Silverado 4X4 Truck - 4Hi or 4Lo won't engage


Gm makes lots of different trucks with lots of different engines using lots of different transfer cases. How about not keeping all that info a secret

Jan 15, 2018 | Chevrolet Silverado Cars & Trucks

1 Answer

How do i know when it is in 4x4 . where must the lever be for it not to be in 4x4. no the lever is has got 2lo, 2hi n 4lo and 4hi. when you drive where must the it be, and is there lights on the bash that...


Hi, 2hi is your normal driving selection, this is NOT in 4WD mode. Both 4lo and 4hi is for 4 wheel driving, 4lo is used in extreme conditions and will gear the vehicle down to a very slow speed with maximum traction at the wheels, 4hi is for general 4 wheel driving in rough terrain, if you have lights on the dash than it will come on when you change gears, hope this help

Feb 16, 2011 | Jeep Cherokee Cars & Trucks

1 Answer

2004 Blazer won't shift into four wheel drive. I put it in Neutral and push the 4HI button, the lights blink back and forth between 4HI and 4LO then goes back to 2HI. Any thoughts on what this can be?


ok what i would try is put the truck in park then try to **** into your 4wheel drive high or low, other than that with the computer thats on board you may just have a technical issue that can be solved at the dealership

Feb 01, 2010 | Chevrolet Blazer Cars & Trucks

1 Answer

02 dakota wont shift from 4hi to 2 hi


Try commanding the drive ranges while in netural cycling them. This may normalize the controller that senses the position from the encoder motor assembly. There maybe a procedure for that in a service manual.

Dec 12, 2009 | 2002 Dodge Dakota Club Cab

3 Answers

HOW DO I PUT A 1998 GMC JIMMY IN 4 WHEEL DRIVE?, DO I HAVE BE IN "PARK" OR CAN I CHANGE IT INTO 4 WHEEL DRIVE WHILE IM DRIVING?


You should be able to put in 4x4 while in drive less than 35mph. Mine had a switch to turn to engage or dis-engage.

Oct 15, 2009 | 1998 GMC Jimmy

2 Answers

S10 pickup 4wheel drive wont shift from 4hi to 2hi


A good ground is very imporant on these vehicles

Dec 31, 2008 | 2000 Chevrolet Blazer

2 Answers

4wd stuck in 4Lo


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.

Dec 06, 2008 | 2001 Chevrolet Tahoe

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