Question about 2003 GMC Yukon

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What kind of fluid goes in my transfer case 2003 gmc yukon

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: 2003 GMC SIERRA 2500HD

I have the same issue...what's the fix?

Posted on Oct 01, 2008

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SOURCE: Ned to change the oil in transfer case

The Z71 typically comes with the auto 4wd transfer case (cannot remember the GM number). This requires AutoTrak II, which is available at a GM dealer. Do not use any other fluid in this transfer case! The previous post was correct in the location of the two plugs, but not on the fluid (the other types of transfer cases by GM use ATF). The transfer case is located under the truck right under the cab. There is a small skid plate under it, and a large driveshaft leaves the rear end of the case heading to the rear differential (axle). If you have the manual or electronic w/o auto 4WD transfer case, you can use Dexron III, but Dexron VI is a better fluid that is also now available at your local auto parts store. Again, if you have the AUTO 4WD button in the dash, use the AutoTrak II fluid from the dealer.

Posted on May 22, 2009

  • 62 Answers

SOURCE: what type of fluid goes in the transfer case on a

The correct fluid for your transfer is dextron/mercon transmission fluid.To check the fluid level,jack up both ends of the vehicle and be sure to support with jack stands.Make sure vehicle is level.If you look at the rear of the transfer case,you will see two plugs,one lower than the other.Remove the lower plug and if fluid runs out it was overfilled,if nothing runs out,stick your pinky finger in the hole and feel for the fluid level.If it needs fluid,remove upper plug and pour in fluid until it runs out the bottom hole.Then replace plugs and lower vehicle

Posted on Aug 07, 2009

Molson02536
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SOURCE: 2003 GMC Yukon - fuel pump

Check your ECM fuse. There should be 2 fuses for your ECM. It's the ECM that controls the function of the fuel pump. Good luck friend and it's also common for the wire harness from the frame to the fuel pump to go bad due to corrosion from the bad weather we get in the winter and rainy spring and fall. 

Posted on Sep 04, 2009

  • 117 Answers

SOURCE: Gmc yukon stuck in park.

possible brake switch not sending signal to shifter solenoid to allow shifter movement. possible broken shifter knob/relay rod in shifter assembly

Posted on Nov 15, 2009

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2 Answers

2002 yukon front end wont engage


2002 GMC Yukon

2002 GMC Yukon

2004 TRANSMISSION Transfer Case - NVG 149-NP (One Speed Automatic) - SUV

2004 TRANSMISSION Transfer Case - NVG 149-NP (One Speed Automatic) - SUV

TRANSFER CASE NO FRONT DRIVE

Transfer Case No Front Drive

Cause

Correction

DEFINITION: The transfer case is not delivering engine torque to the front propeller shaft.

Review the Symptoms - Transfer Case and perform the necessary inspections.

Viscous coupling faulty 1. Inspect the transfer case fluid for being black. If the fluid is

black, it is most likely caused by a viscous coupling failure.

2. Test for a faulty viscous coupling. Refer to Transfer Case

Description and Operation.

3. Disassemble the transfer case. Refer to Transfer Case

Disassemble in Transfer Case - NVG 149-NP3 Unit Repair.

4. Inspect the viscous coupling for a bulged cover. Refer to

Cleaning and Inspection in Transfer Case - NVG 149-NP3 Unit

Repair.

5. Replace the viscous coupling if it is faulty. Refer to Transfer

Case Assemble in Transfer Case - NVG 149-NP3 Unit Repair.

Planetary carrier faulty 1. Disassemble the transfer case. Refer to Transfer Case

Disassemble in Transfer Case - NVG 149-NP3 Unit Repair.

2. Inspect for faulty planetary carrier components. Refer to

Cleaning and Inspection in Transfer Case - NVG 149-NP3 Unit

Repair.

3. Replace any faulty planetary carrier components. Refer to

Transfer Case Assemble in Transfer Case - NVG 149-NP3 Unit

Repair.

Oct 19, 2010 | GMC Yukon Cars & Trucks

3 Answers

What kind of oil goes in the transfer case for the four wheel drive


If it's a manual case ( pull stick ) then it's dexron III automatic trans fluid , if it's automatic ( push button ) then use GM part # 12378396

Jul 15, 2010 | 1999 GMC Sierra

1 Answer

Leaking radiator fluid from fan pulley? 2004 GMC Yukon Denali. How can i fix this?


you need to replace your water pump. The pulley you speak of is on the water pump, and when the seal goes out, it leaks in that specific spot.

Nov 26, 2009 | 2003 GMC Yukon Denali

4 Answers

Fluid in a transfer case


if it is an electric shift t-case gm has there own oil not found at auto part stores

Sep 18, 2009 | 2003 Chevrolet Silverado 1500

2 Answers

Ned to change the oil in transfer case


The Z71 typically comes with the auto 4wd transfer case (cannot remember the GM number). This requires AutoTrak II, which is available at a GM dealer. Do not use any other fluid in this transfer case! The previous post was correct in the location of the two plugs, but not on the fluid (the other types of transfer cases by GM use ATF). The transfer case is located under the truck right under the cab. There is a small skid plate under it, and a large driveshaft leaves the rear end of the case heading to the rear differential (axle). If you have the manual or electronic w/o auto 4WD transfer case, you can use Dexron III, but Dexron VI is a better fluid that is also now available at your local auto parts store. Again, if you have the AUTO 4WD button in the dash, use the AutoTrak II fluid from the dealer.

Apr 19, 2009 | 2003 GMC Sierra 1500

1 Answer

GMC 2003 Yukon


I can only say continue the maintenance but there is so much evidence now that synthetic oil is far superior, it is all some manufacturers will allow for warranty. Google "toyota sludge" or "chrysler sludge" Modern engines are built with such tight emission regs that if the oil breaks down, it will make qick work of your money.

Mar 14, 2009 | 2003 GMC Yukon

1 Answer

GMC 2003 Yukon What maitence needs to be done?


if you look in owners manual all maint. sched. is in it.

Mar 02, 2009 | 2003 GMC Yukon

1 Answer

I have a 2003 Yukon XL that will switch from Auto 4 wheel drive to 4 high or 4 low on its own. The service 4 wheel drive indicator comes on when it is in 4 wheel drive. The fluids in the transfer case...


My 2003 yukon xl does the exact same thing. Sorry that I do not have a solution, but I figure its the same reason the daytime running lights always burn-out. The SUV in general has be an absolute POS and I will never buy another.

Dec 16, 2008 | GMC Yukon XL Cars & Trucks

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