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transfer case

  1. Replace torque converter in my 06 TB LS 4.2L-I6 4WD

    02-09 Vortec 4.2L I-6 Engine and Drivetrain
    Need to replace the torque converter in my 06 TB LS 4.2L-I6 4WD. For me, it will be a time consuming effort, but I'm looking forward to it. Realizing there are numerous people out there who have done this alone, I would love to hear from you. The reason for my post is to establish some brief...
  2. Replace Torque Converter 06 Trailblazer LS 4.2L-I6 4WD

    02-09 Vortec 4.2L I-6 Engine and Drivetrain
    Need to replace the torque converter in my 06 TB LS 4.2L-I6 4WD. For me, it will be a time consuming effort, but I'm looking forward to it. Realizing there are numerous people out there who have done this alone, I would love to hear from you. The reason for my post is to establish some brief...
  3. 4hi/4lo/awd switching on its own.

    4x4 Drivetrain
    My 2002 trailblazer has been switching itself into 4WD on its own. The first time I've noticed this happening was when I was taking a sharp right at a light into a gas station then took a sharp left up to a pump. It was hard to move taking the turn pulling in and then even harder pulling up to...
  4. 2006 Envoy Transfercase

    4x4 Drivetrain
    I have a 2006 Envoy and I was stuck in "4WD" but only the front differential was locked and my transfer case was in 2WD. I replaced my transfer case motor and in doing so my bolts wouldn't line up and I tried shifting the transfer case using the motor and something bound up in the case and a lot...
  5. Bearing like noise

    General
    After a LOT of reading and 3 mechanics i need the help of the forum. I have been searching for a sound that is of a bearing going bad type. Here are the symtoms. Noise only under load and its after acceleration. When i remove the foot off the gas then a bearing like noose comes into play. It is...
  6. Transfer case bolts sheared, case rotated clockwise...

    Transmission Mods
    I just bought my 02 TB LTZ 3 months ago, and have been hearing a clunk from behind the tranny for a while, especially when I shift into reverse. Also, in first and second gear, there is an intermittent grind on take off, and while shifting into 2nd. It's not loud but I can hear it and feel it...
  7. Planetary Gear problem?

    General
    reading this thread http://forums.trailvoy.com/showthread.php?t=122874 basically describes my problem exactly. After about 4 hrs of driving, towing a trailer total about 700lbs (trailer and cargo), in 30+ Celsius temps, using cruise control, the envoy just goes into neutral, revs spike and we...
  8. Need help diagnosing transfer case issue

    4x4 Drivetrain
    Hello, all. This my first post to the Trailvoy Forums. I searched through other threads that seemed related, but I couldn't find the info that I think that I need. I have a 2002 Envoy SLE that I just purchased used. It has 234,000 km on it (about 144,000 miles). When I purchased it, it had...
  9. Vibration

    4x4 Drivetrain
    Just had to have the transfer case module, and the throttle body assembly replaced on my '02 GMC Envoy. When I received it back from the dealership, it now has a vibration both when idle and in gear. Although the transfer case module was not working before the repair, the engine would start...
  10. Two transfer case encoder motors destroyed in six months, possible front diff problem

    General
    I've been lucky enough to fix quite a few problems based on TrailVoy posts, but I've run into a unique situation that I haven't been able to find in the search results. This is for a 2005 Buick Rainier with the 5.3L engine, A4WD NVG 126 transfer case and non-locking front differential. Milage...
  11. Pulsing Vibration while driving

    4x4 Drivetrain
    I have a 2002 TB LTZ and while I'm driving there is a vibration sound/feeling through the gas pedal. It sounds just as if 4WD is engaged, but it's not. It is very loud when around 30-40 MPH. My Transfer case actuators are working but switching between 2HI and AWD and 4WD sounds no different as...
  12. 02 Bravada not engaging AWD

    4x4 Drivetrain
    A couple of months ago my bravada was doing the infamous crow hop on low speed turns. Figured it the the sensor in the encoder motor so I ordered one off ebay and it turned out to be broken. So I ended up putting the old one back in. The only problem was that the encoder motor somehow...
  13. Transfer Case Leak??? Red Fluid...

    4x4 Drivetrain
    After a road trip, the next morning saw a small puddle, 3" maybe, under the car. Pulled it into the garage and climbed under it, and saw the attached picture. Hard to tell where the fluid is coming from, possibly the output shaft for the front wheel drive? Anybody else had problems similar to...
  14. Only have 2Hi nothing else.

    4x4 Drivetrain
    Two days ago we got the snow that the rest of the midwest got. When I left the auto plant in my trusty 03 TB I was confident that the dreaded white death would not slow me down. The road leaving is steeply banked and I was surprised that I was sliding to my right down the banked road even at 2...
  15. Jumping out of 2WD

    4x4 Drivetrain
    My 2002 Envoy will jump out of 2WD and into a sort of neutral position almost randomly. Moving it to A4WD (after turning off the engine to avoid grinding) will correct it and even allow me to return to 2WD (or 2HI - I don't recall what it says). This is more frequent in the cold weather...
  16. [SOLVED] Where my transfer case peeps at?

    4x4 Drivetrain
    So it seems that every month so far this year has plagued me with some kind of financial "incident". Yesterday I had taken some stuff over to a good friend of mine's house. I had to 4wd backwards into his yard to get over a curb. Later on I left his house and noticed a noise coming from the...
  17. Which Transfer case???

    4x4 Drivetrain
    Hi all, Can anyone tell me which transfer case my SAAB 97x 5.3 has? It is fulltime AWD. I am hoping it is the same Torsen as is used in the TBSS. So, Anyone have the answer? Thank you, NTRSANDMANN
  18. Transfer Case Problem

    4x4 Drivetrain
    Hi, my name is Dom and I'm new to this site. I have a 2002 GMC Envoy. I have the switch inside the vehicle to change between 2HI, AWD, 4HI, and 4LO. Sometimes when I start the vehicle the light in the transfer case consistantly blinks. When the transfer case is functioning properly, it will...
  19. Do all Trailvoys use the np4 transfer cases?

    4x4 Drivetrain
    :grouphug:Ok, so with my recent adventure @ the dealership, I became quite social with the master tech there with over 40 yrs Gm experience,,,,, So I was picking his brain and one of the things that came up was a transfer case conroller/switch..... It is def doable, but how easy..... I'd much...
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