Transfer case noise???

[m455sx]

New problem found as my truck make a awful grinding noise in drive train when under slight load(not all the time) on acceleration. Anybody had this problem before?

[clinebarger]

Originally Posted by m455sx

New problem found as my truck make a awful grinding noise in drive train when under slight load(not all the time) on acceleration. Anybody had this problem before?

Have you checked the fluid level in the transfer case?

If its low or empty....Check for a hole in the transfer case....pics.
This is called "Pump Rub"....The fluid pump rubs a hole in the case....And lets the fluid go.

[D-man313]

How many miles? The transfer case went out in my 04 2500HD at about 60-65 thousand. Same thing heard a horrible grinding noise. Pull the driveshaft, and check for excessive play in the output shaft on transfer case. Shows no signs of going out. No fluid on ground or case.

Pulled my case apart and it was toast. Bearings, c-clips, orings, etc.. all gone.

[D-man313]

http://forum.highlifter.com/2002-gmc...-m4642562.aspx

Many more forums where people experiencing the same problem. Some people have it at 20k others at 200k.

[m455sx]

No hole but fluid was a little low and was very dirty. Truck just flipped 100K miles. Can someone give me the model number of transfer case. It is electric shift.

[truckdude239]

There is a tag on most GM cases that will say NP---, the tag is gray and red.

[m455sx]

Heard from my Mechanic and he drove to a dealership and it has been confirmed my transfer case is shot. I have also found out that nobody can guarantee that it can be rebuilt as the case itself maybe shot. So i am stuck using a remanufactured one in which is in route now. I should get Tuesday or Wedneday and install then. Also i found out GM used 4 different tranfer cases in that year for HD trucks. Also for the record my transfer case number is 263XHDGM ratio 272. Wonder if they have problem with all cases or certain models. Hopefully some one can shine light on this. While the truck is in shop it seem i need to replace metal brake line above gas tank as it has rusted. So may want to check yalls before it fails. Cost of tranfer case installed is $2600 through Jasper and GM dealership.

[clinebarger]

Originally Posted by m455sx

Heard from my Mechanic and he drove to a dealership and it has been confirmed my transfer case is shot. I have also found out that nobody can guarantee that it can be rebuilt as the case itself maybe shot. So i am stuck using a remanufactured one in which is in route now. I should get Tuesday or Wedneday and install then. Also i found out GM used 4 different tranfer cases in that year for HD trucks. Also for the record my transfer case number is 263XHDGM ratio 272. Wonder if they have problem with all cases or certain models. Hopefully some one can shine light on this. While the truck is in shop it seem i need to replace metal brake line above gas tank as it has rusted. So may want to check yalls before it fails. Cost of tranfer case installed is $2600 through Jasper and GM dealership. Also the truck will be put up forsale as i am done with it.

All 01-06 4x4 HD trucks with the NP 261 & NP 263 can have transfer case problems.
Why not just buy a good used one? Install a "case saver", keep if full of fluid & change it often. $2600 is alot of bread to just throw your hands up & sell it.

I too have fixed trucks....then sold them...Then hear 5 years later that the truck has had NO problems

[m455sx]

I thought of buying a used one but it maybe damaged as well plus there are none for sale locally and have to wait a week to get one from another area or state. It seems to me after doing research and talking to people that this is a common problem. It also give me a reason to upgrade to a diesel.

[clinebarger]

Originally Posted by m455sx

I thought of buying a used one but it maybe damaged as well plus there are none for sale locally and have to wait a week to get one from another area or state. It seems to me after doing research and talking to people that this is a common problem. It also give me a reason to upgrade to a diesel.

Duramax truck's have the same transfer case issues.
The 01-04 LB7 Duramax have really bad injector issues. Look for a 04.5-07 LLY or LBZ.

[1970 custom]

Did anyone fine a good please to find a transfer case at a resanable price
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[m455sx]

yes i ended up putting a Jasper unit in and sold truck. I priced it out with dealer and other avenues, all were with in $50 bucks. I was very discussed with the problem. I am in the market for a 2011 Dually in which i will get in the next month or so. Thanks for the inquiry!

[MI2CHEVYS]

I just got my Tahoe back today. I took it to my new friends Lorenzo & Justin @ Grease Monkey Transmission in Phoenix, Arizona. They replaced the punctured case( $70 used ) and completely rebuilt the transfer case including a case saver so it won't happen again for $800 with a 12 month 12,000 mile warranty. I Love how smooth it is now and the service was excellent !