Question about 1999 GMC Sierra

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TRUCK WILL TURN ON BUT WILL NOT GO INTO GEAR

HAPPENED THE OTHER DAY AND WE GIGGLED THE TRANSFER CASE AND IT CAME OUT OF IT BUT THIS MORNING IT IS NOW DOING THE SAME THING AND HE CAN'T GET IT TO COME OUT. ANY IDEAS

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I know if your transmission fluid is low it will cause this problem. I'm not sure if you check that already but it's worth a try if you haven't.

Posted on Dec 10, 2008

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4 wheel drive problem


check the lingage at the transfer case and also check all lock out hubs


Dec 11, 2013 | Cars & Trucks

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2004 Tahoe stuck in auto 4wd and service 4wd light is on


switch on dash can cause this but the transfer case control module is the culprit most times.try disconnecting battery this will should reset the TCM.see what happens.worst case senereo is bad transfer case

Dec 10, 2013 | 2004 Chevrolet Tahoe

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Service four wheel drive light on,cant shift into 4wd cold only ,below 45F,drive awahile resatrt the truck it works fine,warm days no problems .


Vehicles: 2002 Chevrolet Trailblazer 4WD 4.2L SFI DOHC 6-cylinder

Your front 4WD Transfer case is low on Gear Oil.
On warm days, the Gear Oil expands slightly, and is less viscous, so the "Service 4WD" light stays off. On colder days/mornings the story changes.

The following paragraph has info applying to the manual differential only:
The 2002 Trailblazer (the first year Chevy made the Trailblazer) has a Front Differential using 1.11 (that's 1 and 1/9th) Quarts Gear Oil, and a Rear Differential with a capacity of 2.29 (thats 2 and 2/7ths) Quarts Gear Oil.
The Gear Oil needed is GM Part No.12345349 or GM Part No.1052931 (they're identical), also known as "GM Synchromesh"(R), which is a type of GLS (Gear Lubricant, Special), also known as "Manual Synchromesh Transmission Fluid 5W30". A synthetic version of which sells for $12.70/qt (USD) at
http://www.amsoil.com/storefront/mtf.aspx

This is not to be confused with 5W30 motor oil (which can be had for $3.00/qt (USD)).

The 2002 Trailblazer 4WD Transfer Case (NV126 Transfer Case) capacity is 0.8 Liters of GM Part No.12378508 (US), also known as "GM Auto Trak II"(R).
Note that one Quart (US) = 0.946 Liter, so 0.8 Liter = 27.06 ounces.

Red Line sells something that they say replaces both GM Synchromesh and GM Auto-Trak II for $12.14/Qt and $44.55/Gal (US) at
http://www.shopwiki.com/Red-Line-MTL-70W80-GL~4-Gear-Oil-%281-Quart%29

13 Manufacturer Recalls apply to the 2002 Chevrolet Trailblazer (model year 2002 was the first year Chevy offered the Trailblazer), and two recalls pertain to the 4WD Transfer Case. Note that one of the recalls applies to only 895 units, so your vehicle is unlikely to be affected by this Transfer Case recall.

2002 Trailblazer Recall ==========================
OCT 17, 2001 ' Recall ID# 54221

Recall Reason POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE)
Recall Date OCT 17, 2001
Model Affected TRAILBLAZER
Potential Units Affected 78004

Recall Summary
VEHICLE DESCRIPTION: SPORT UTILITY VEHICLES EQUIPPED WITH 4-WHEEL DRIVE. THE CALIBRATION OF THE TRANSFER CASE CONTROL MODULE COULD CAUSE INSUFFICIENT HIGH SPEED GEAR ENGAGEMENT.

Consequence
IF THE GEAR IS NOT ENGAGED, THE VEHICLE CAN ROLL WHEN THE TRANSMISSION IS IN "PARK" AND A CRASH COULD RESULT WITHOUT WARNING.

Remedy
DEALERS WILL UPDATE THE TRANSFER CASE CONTROL MODULE CALIBRATION TO INCREASE GEAR ENGAGEMENT. OWNER NOTIFICATION BEGAN NOVEMBER 6, 2001. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT CHEVROLET AT 1-800-222-1020 OR GMC AT 1-800-462-8782.

Notes
GENERAL MOTORS CORP. 01064/01065

2002 Trailblazer Recall ============================
SEP 05, 2001 ' Recall ID# 26006

Recall Reason POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE)
Recall Date SEP 05, 2001
Model Affected TRAILBLAZER
Potential Units Affected 895

Recall Summary
VEHICLE DESCRIPTION: SPORT UTILITY VEHICLES (4 WHEEL-DRIVE). SOME OF THESE VEHICLES WERE BUILT WITH A RANGE SHIFT COLLAR IN THE TRANSMISSION TRANSFER CASE THAT CONTAINS CRACKS.

Consequence
THIS CONDITION COULD RESULT IN A COMPLETE FRACTURE OF THE RANGE SHIFT COLLAR AND SUBSEQUENT LOSS OF VEHICLE FORWARD AND REVERSE GEARS, AND THE INABILITY TO MAINTAIN "PARK" POSITION. THIS INCREASES THE RISK OF A VEHICLE CRASH RESULTING FROM UNINTENDED MOVEMENT OF A PARKED VEHICLE.

Remedy
DEALERS WILL REPLACE THE TRANSFER CASES AND UPDATE THE CONTROL MODULE CALIBRATION. OWNER NOTIFICATION BEGAN SEPTEMBER 6, 2001. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT CHEVROLET AT 1-800-222-1020 OR GMC AT 1-800-462-8782.

Notes
GENERAL MOTORS CORP. 01061


Read about all (13) 2002 Chevy Trailblazer recalls at:
http://www.internetautoguide.com/10-12-2002-16-1287/2002-chevrolet-trailblazer-recalls.html

Dec 05, 2011 | 2002 Chevrolet TrailBlazer

1 Answer

Was pulling out onto the highway when truck shifted from 1st to second gear a clunk noise happened n now i have a whining sound and no reverse. transfer case or transmission?


this sounds like the ******. if it were the transfer case then you would loose all foward and reverse gears, but since its just reverse i would say its in the ****** and also the whinning noise is very common when the pump is going bad, have the ****** checked out. good day.

Sep 02, 2011 | Chevrolet Silverado 1500 Cars & Trucks

1 Answer

We understand that your problem is: I have a 2000


Whats happening is when you go into drive the transfer case spins but is not in gear and then when you go into park the gears are grinding, because the transfer case is spinning, its like trying to go into park while the wheels are spinning, the transfer case is in neutral you need to adjust it, and make sure the adjustment is right or you may be in 4wd low instaed of 2wd so after the adjustment check and postions of the 4wd.

Mar 17, 2011 | Dodge Dakota Cars & Trucks

2 Answers

Front wheels lock up skip while turning anyone know why this happens ? I've replaced both axless but same thing happens


yes this is caused by the transfer case which is the heart of the 4 wheel drive system, have the fluid changed in the transfer case, drive it a few days and see if problem clears, if not the transfer case will need to be ovehauled.

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1 Answer

Can't shift the gears. It's a 5 speed.


Have the slave valve checked, it might be bad.

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2 Answers

Warn manual hub install 2000 f-250


THE KNOB ON THE DASH ENGAGES THE TRANSFER CASE, WHICH TURN THE AXLES. THE MANUAL HUBS LOCK THE WHEELS TO THE AXLES.


DCL

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