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Hummer H2 4X4 grinding no lo gear

Transfer case grinding noise in 4 wheel drive and no 4 wheel lo

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: 99 Silverado 4-wheel drive not engaging

It does not seem that sufficient diagnosis was done. No, you cant give a specific diagnosis like that without tearing unit down. It's likely that they told you the most common failure and left it at that. Likely there is a problem with your unit...I think this becomes more of a trust issue than a mechanical one. A second opinion from an independent reputable shop may help but either way, you need to have it fixed. In not using it much, it makes me wonder how it got worn.
good luck

Posted on Mar 19, 2009

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Monster80
  • 463 Answers

SOURCE: 1999 Silverado Transfer Case Noise

I have the same problem and its in the front axle..Sounds like its in the t case but its the front axle.Make sure all your tires are the same size and same air pressure and the inner front axle seals are not leaking any fluid..

Posted on Mar 29, 2009

  • 334 Answers

SOURCE: grinding noise in the transfer case

it duse not sound good. sound like your tranfre case is on its way out.but i would have it antillies frist you may have a bad sencer

Posted on May 31, 2009

  • 14 Answers

SOURCE: "gear grinding" noise on acceleration, 2 wheel high only

You need to get the truck in the air on a lift, properly! and put it in gear and listin w/ a stethascope, you'll find your noise.

Posted on Jun 10, 2009

  • 1779 Answers

SOURCE: Grinding in and out of 4 wheel drive

You say 'new' truck, 09? or new used? I have had 3 Fords, 3 w/ manual trans. case, if you go into 4x4 Low range, you must come to a complete stop before shifting the trans. case to 4x4 mode, and I always put trans (automatic) in neutral before slipping into 4x4, it engages smoothly, no grinding. 4x4 high range can be put in while moving, but I would let off the gas pedal, shift to 4x4 high range, then resume accelerating. If there is any grinding going on doing it as above, something isn't right. Check the trans. case fluid level also, to make sure that's not an issue.

Posted on Aug 15, 2009

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1999 chevy blazer 4x4 The 4 wheel drive dash switch is brand new. When in 2 wheel drive none of the buttons light up. When I push 4 hi the 4 hi and 4 lo button lights light up and seems to be in 4 hi. When...


It could be a junk switch or it could be bad contacts inside the transfer case motor.. Does the transfer case switch to the selected gears? Everytime? If so, you might try another switch. If it does the same, I would say the motor contacts are bad. Replace the motor if you want the lights, But I personally wouldn't do it until the motor quit switching gears. They're not cheap.

Nov 13, 2014 | 1999 Chevrolet Blazer

1 Answer

Grinding noise from transfer case


you need repair manual for the 4 wheel drive.
you will need to pull it apart and repair the internals.

Apr 08, 2014 | Ford F-150 Cars & Trucks

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Jeep in four wheel drive


Shift the transfer case to N while it is making the noise. If the noise goes away the transfer case is the culprit.

Nov 22, 2017 | 2003 Jeep Grand Cherokee Limited

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My 2007 2500HD Duramax 4 wheel drive Hi or Lo doesn't engage. The "Service 4 wheel drive" light comes on. No noises when trying to engage. Replaced the actuator, but no difference. Also sometimes when


The service 4x4 light coming on indicates problem with the system an DTC'S - diagnostic trouble codes are stored . Before replacing parts have a qualified repair shop do diagnostic's . ! Guessing an replacing parts on electronically controlled systems never fixes cars.
Do you know what DTC'S are ?
DTC B0775
DTC B0780
DTC B0785
DTC B0790
DTC B2725
DTC C0306
DTC C0379
DTC C0387
DTC C0396
DTC C0550
DTC C0569
DTC C0896
DTC P2160 or P2161
Which transfer case does it have ?
Transfer Case - BW 4485-NR3
Transfer Case - MP 1222/1225/1226-NQG
Transfer Case - MP 1625/1626-NQF
Transfer Case - MP 3023-NQH
Transfer Case - NVG 261-NP2

Sep 02, 2017 | Cars & Trucks

3 Answers

GMC '91 Jimmy, Transfer case. When in two wheel drive I hear a slight grinding noise and rattling noise. When in 4 wheel no noise. 330,000 miles, could something be worn? What keeps the transfer case gear...


Remove the transfer case and strip it down,wash it out and replace whatever is worn.
330,000 miles is unrealistic
Your chain is worn and stretched for sure, and rattling and may be cutting into the case.
Don't install another salvage yard unit, unless you can not repair yours. Then strip down whatever you purchase, and go thru it also.

Sep 17, 2010 | 1991 GMC S-15 Jimmy

3 Answers

How do you use 4WD on a 1999 dodge durango?


there are 2 systems.
one is a part time system only.the 4x4 locks and is for ice mud and snow.Driving full time will damage the transfer case.The other system is a full time system and the selector says 2wd,4wd part time ,4wd full time and 4 lo. if in full time,it can be driven all the time even on dry roads.The full time is really an all wheel drive system.
the 4low is a very low gear and the main shifter has to be put in neutral and then the transfer case put in 4 low.attempting to put it in 4 low while in "drive" will make a gear grinding noise.
getting out of 4 low is the opposite.shifter to neutral and then put it in 2wd and then in drive.The newer durango has an electronic transfer case with a dial on the dash.The 2002 was available with 2wd,4wd,awd and 4 lo on a switch.The 1999 has the lever on the floor .

Feb 12, 2010 | 1999 Dodge Durango

1 Answer

Grinding in and out of 4 wheel drive


You say 'new' truck, 09? or new used? I have had 3 Fords, 3 w/ manual trans. case, if you go into 4x4 Low range, you must come to a complete stop before shifting the trans. case to 4x4 mode, and I always put trans (automatic) in neutral before slipping into 4x4, it engages smoothly, no grinding. 4x4 high range can be put in while moving, but I would let off the gas pedal, shift to 4x4 high range, then resume accelerating. If there is any grinding going on doing it as above, something isn't right. Check the trans. case fluid level also, to make sure that's not an issue.

Aug 15, 2009 | 1998 Dodge Ram 1500 4WD

2 Answers

"gear grinding" noise on acceleration, 2 wheel high only


You need to get the truck in the air on a lift, properly! and put it in gear and listin w/ a stethascope, you'll find your noise.

Jun 10, 2009 | 1996 Chevrolet C1500

2 Answers

2001 Dodge Durango stuck in 4 wheel-Low. Won't switch back to 2WD


Just to clarify, the "transmission" is not stuck in 4-Lo. It is the "transfer case" that is attached to the transmission that actually engages the 4-Hi and 4-Lo modes. To properly shift your vehicle into 4-Lo, you know that you have to shift the transmission into neutral and slow down to less than 5 mph. Once your vehicle slows down to this range, your can switch your transfer case into 4-Lo mode. Due to the inner workings of the transfer case, the actual shift into 4-Lo may take a few seconds to complete. This is normal and does not signify that there is an issue. All transfer cases that have 4-Lo mode will act this way regardless of the make or model. To make a long story short, to shift out of 4-Lo you must follow the same steps that you took to shift into 4-Lo, just in reverse order. Switch the transfer case to 4-Lo mode if it isn't already there. Slow down to less than 5 mph (your vehicle must be moving, though). Then, shift your car into 4-Hi or 2WD. Give your vehicle several seconds to complete the shift. The transfer case indicator light will flash until it is complete. When it does complete the shift into the new gear mode, you will most likely hear a "clunk" (the range sleeve inside the transfer case disengages from its mating spline) from under your car. Again, any transfer case with 4-Lo (regardless of make or model) will exhibit this same noise. This should help you get out of 4-Lo. It is good practice to shift your car into and out of 4-Lo at least a few times each year to keep all of the splines free of corrosion and build-up. Based on the age of your vehicle, your transfer case may also need a complete flush and some new transmission fluid. Hope this helps.

Feb 22, 2009 | 2001 Dodge Durango

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Apr 12, 2018 | Hummer Cars & Trucks

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