Question about 2002 Chevrolet Silverado 2500HD

2 Answers

Had transfer case rebuilt and I can't find a definite answer to what fluid it uses.

The chain got loose and rubbed a hole in it so I don't know what was in it.Some say autotrac 2. and some say ATF. It's a NP263XHD with pushbutton 4wheel drive . Allison trans 6.6 duramax. 3 buttons 4hi, 4lo, 2hi and no auto 4-wheel drive.

Posted by on

  • Anonymous Jan 04, 2009

    i have 2005hd chevy 4x4 6.6 with allsion. i was driving home & the abs & brake light came on ,then went out. the next day i was driving on interstate the lights came back on . i heard a loud noise and i pull over . wrecker to chevy dealer & now bad transfer case with 64000 mile. any ideals was went wrong & why ?



2 Answers

  • Level 1:

    An expert who has achieved level 1.


    An expert that hasĀ over 10 points.


    An expert whose answer gotĀ voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 6 Answers

Go to and search for "pump rub". It seems there is an issue with a clip coming loose inside the Tcase and letting pieces rub a hole in the case.

Posted on Jan 18, 2009

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 3 Answers has the answer and many more items for sale like a owners manual or service manual. I am pretty sure it is ATF though. I have not had to take mine apart nor add any fluid.

Posted on Oct 16, 2008


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

2 Answers

Where can i purchase a rebuilt transfer case for a 2007 Suzuki Grand Vitara >> Base 2.7L, RHD, V6. in Florida?

the chain is situated at the rear of the box and connects the output shaft of the gear box to the input shaft of the transfer case . it does wear and get loose and the gear teeth wear as well. all that is required is a chain and 2 gears and labour to replace
i feel that replacing the transfer case will not achieve much so i suggest that you talk with a service dealer to get a better idea of what is involved.

Jan 22, 2015 | 2007 Suzuki Grand Vitara 4WD

3 Answers

Where do i find my transfer case and what fluid does it use

1. Be sure to run your car (in 4WD) for about 5-10 minutes or so to warm the oil up and be sure to park on a level ground.First we need to gather our materials. This is what I used for my oil change:Initial expenses
  • Oil Catcher - $10 at Pep Boys
  • Fluid Pump - $5 at Pep Boys
  • 24mm wrench or ratchet (assumed ownership)
  • 12mm? and 14mm? sockets to remove skidplate
Transfer Case Change Expenses
  • 3 Qt 75W90 Gear Oil - $21
  • (I used Redline from
tcase1-nggid03733-ngg0dyn-320x240x100-00f0w010c010r110f110r010t010.jpg 2. Locate the Transfer Case.
Remove the Fill Hole plug first, then place your oil catcher in position, and remove the drain hole plug.
While the oil drains, clean off the drain plug.
3. When finished draining, replace the drain plug, and proceed to pump the fluid into the fill hole.
I filled until the fluid overran, but you can check the fluid by sticking a pinky into the hold and checking the level.
Replace the fill hole plug, and done.

Oct 10, 2014 | 2000 Mitsubishi Montero Sport

1 Answer

Transfer case grinds on take off from stop

it might be a loose chain that drag on the bottom of the case.
have a shop to do this job if you dont have enough knowledge for changing chain of transfercase.
and be sure to use the right type of fluid.

Feb 20, 2012 | 1994 Chevrolet K1500

2 Answers

How do I change the transfer case fluid on za ford escape

Hi there,


New transfer case lubricant must be installed any time the transfer case has been submerged in water. Also, transfer case failure CAN result if the correct fill procedures are not followed.

NOTE: The transfer case is lubricated for life and is not to be checked unless a leak is suspected or a repair is necessary.
  1. Remove the drain plug and drain the transfer case.
  2. Apply sealant to the drain plug threads and install the plug.
  3. The fluid level must be even with the bottom of the filler hole with the vehicle on flat, level ground.
To Fill:
  1. Remove the fill plug and fill the transfer case with SAE 75W-140 synthetic gear lubricant.
  2. Apply sealant to the fill plug and install the plug.


"Please take a moment to rate this solution with a 'testimonial' and/or 'thumbs up', as this will keep my status active and allow me to continue offering technical support. Thank you

Jul 31, 2011 | 2003 Ford Escape

1 Answer

I have a rattle coming from where the transfer case is wont engage into 4x4 the push button light just flashes

Transfer case pump can wear through case and loose it's oil. After a while, gears wear out .

Crawl under and look at the top end of transfer case, just above drive shaft....see a little hole ?

If so, you have joined the 'Pump rub club'.

Go to Google and search = 'Pump Rub'.

Jan 16, 2011 | 1999 Chevrolet Silverado 1500

1 Answer

I have a 2004 chevy silverado 1500 with 4x4 on the floor. its approaching 100,000 miles and i belive the transfer case is what is making noise, because i hear grinding/clunking when it shifts (when it is...

i would recommend that you check your fluid level in your transfer case. i have a 2003 chevy 1500 4wd and lost my transfer case. all of the fluid was slowly lost due to a hole punched in the case by an internal ring. this is a known problem caused by the aluminum ring creating a hole in the softer magnesium case. if you have lost your fluid it is likely that your transfer case is bad. this could be the cause of the grinding you are hearing, likely your driveshaft will be loose at the rear output shaft. you may also have problems in your speedo gauge because of the loose driveshaft. if the transfer case is bad it is likely you will need to replace it. (not cheap) there are some after market parts that can be added to the transfer case to prevent the hole from being punched if the case is not already bad. check out they have the after market parts and a better explanation.

Oct 09, 2010 | Chevrolet Silverado 1500 Cars & Trucks

1 Answer

When i get to 55 mph i hear i popping in the front.Ive replaced both cv joints and a wheel bearing,but it didnt help.Iinspected the spider gears but they were fine.I disconnected the front drive shaft now...

Check the front differential for proper spacing inside, also the bearings. Then check the homocinetic joint right behind the front diff. on the drive shaft. If all of them are fine, open the oil screw at the transfer case, drain the oil and check if there are some metal in it. After draining the oil out, use a flat screw driver, insert it into the transfer case (be careful!!) to locate the drive chain. check if there she is very loose ( if you can slide the chain more than 1/2" it need to be replaced). To rule out the transfer case, disconnect the rear drice shaft (U-Joint on rear diff. and then slide them out of the case), disconnect the front drice shaft right on the transfer case (U-Joint), disconnect the shifter and any wiring you find on the case, remove the bolts from the chassie and then remoce the bolts between the case and the auto transmission and slide the case backward till you have it in your hand. Install a new or rebuilt one the same way back, fill it with auto trasmssion fluid as told in the user manual. Do not overfill the case and do not use other fluid as in the user/service manual.

Oct 23, 2009 | 2000 Jeep Grand Cherokee

1 Answer

Transfer case was making a noise, checked and was low of fluid. added fluid and now it leaks fluid everywhere, seems to be coming from about half way up on the passengers side of case.

Most I've seen like that the chain inside wore out and "flys" away from the gear , sawing a hole in the case. The unit needs to be rebuilt and the case either replaced or welded. You would need a transmission shop to verify if I'm correct (I can't see it from here) Other option is a junkyard replacement unit.

Aug 31, 2009 | 2001 Chevrolet Suburban

2 Answers

Transfer case whining at all speeds

Check the fluid level in there. If it was low for an extended period, change fluid. Whining is often caused by low fluid level, but is also a symptom of internal wear. If fluid change does not help, it needs to be rebuilt or replaced.

Jun 18, 2009 | 1996 Jeep Grand Cherokee

Not finding what you are looking for?
Cars & Trucks Logo

532 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts


Level 3 Expert

78267 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides