Transfer Case prob - HELP
08-01-2008, 10:55 AM
#11
I found this which doesn't sound to promising either:
Transfer Case Jumps Out of Gear
DEFINITION: Loss of the transfer case drive torque during deceleration, acceleration or under load.
Review the Symptoms - Transfer Case and perform the necessary inspections.
High/low shift fork pads
2004 Chevrolet Avalanche - 4WD
Transfer Case Jumps Out of Gear
DEFINITION: Loss of the transfer case drive torque during deceleration, acceleration or under load.
Review the Symptoms - Transfer Case and perform the necessary inspections.
High/low shift fork pads
- Inspect the shift fork pads for wear. Refer to Cleaning and Inspection in Transfer Case - NVG 246-NP8 Unit Repair.
- Replace the fork pads or other damaged components. Refer to Transfer Case Disassemble and Transfer Case Assemble in Transfer Case - NVG 246-NP8 Unit Repair.
- Inspect the high/low range fork for damage or wear. Refer to Cleaning and Inspection in Transfer Case - NVG 246-NP8 Unit Repair.
- Replace the high/low range fork if faulty. Refer to Transfer Case Disassemble and Transfer Case Assemble in Transfer Case - NVG 246-NP8 Unit Repair.
- Inspect for excessive wear on the actuator lever - for not allowing full shift fork travel. Refer to Cleaning and Inspection in Transfer Case - NVG 246-NP8 Unit Repair.
- Replace the faulty actuator lever. Refer to Transfer Case Disassemble and Transfer Case Assemble in Transfer Case - NVG 246-NP8 Unit Repair.
- Inspect for the following conditions:
- The input gear high speed engagement teeth for wear or damage
- The engagement teeth on the range sleeve for wear or damage Refer to Cleaning and Inspection in Transfer Case - NVG 246-NP8 Unit Repair.
- Replace the input gear if the engagement teeth are faulty. Refer to Transfer Case Disassemble and Transfer Case Assemble in Transfer Case - NVG 246-NP8 Unit Repair.
- Inspect for the following conditions of the high/low planetary carrier:
- Low speed engagement teeth worn or damaged
- Cracked carrier housing
- Pinion gear bushings worn or out of position
- Pinion gears broken or damaged teeth
- Pinion gears seized Refer to Cleaning and Inspection in Transfer Case - NVG 246-NP8 Unit Repair.
- Replace the high/low planetary carrier if any of the above conditions are found. Refer to Transfer Case Disassemble and Transfer Case Assemble in Transfer Case - NVG 246-NP8 Unit Repair.
- Inspect the bearing in the input gear and the rear output shaft journal for excessive wear. Refer to Cleaning and Inspection in Transfer Case - NVG 246-NP8 Unit Repair.
- Replace the bearing and the rear output shaft if faulty. Refer to Transfer Case Disassemble and Transfer Case Assemble in Transfer Case - NVG 246-NP8 Unit Repair.
- Inspect the input gear for broken or damaged teeth. Refer to Cleaning and Inspection in Transfer Case - NVG 246-NP8 Unit Repair.
- Replace the input gear if faulty. Refer to Transfer Case Disassemble and Transfer Case Assemble in Transfer Case - NVG 246-NP8 Unit Repair.
2004 Chevrolet Avalanche - 4WD
Its going to the dealer on mon, so lets see if they'll fix it on warranty or find anything...prob shud be looked at anyway as its been sweating/lite leak. R/
08-12-2008, 06:57 AM
#18
Well...I knew it wasn't gonna be that simple. No more blinking lites, but I got the msg 'service 4wd' after stopping while having done 20 miles in AWD4. It wudn't switch our of AWD4. I shut the engine off, restarted and it was all good...between this, my AC gremlins, and "reduced engine power" TB prob in the past I'm starting to wonder if I was hit by lightning!
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