99 2500 possible transfer case issues
#1
99 2500 possible transfer case issues
I have a 1999 Silverado 2500
6.0 L engine
3.73 gears
153,000 miles
Recently while towing my 4500 lb trailer, I began to hear a noise coming and going while going up a few small grades at approx 70 mph. I then let off the throttle, selected 4 wheel high and everything sounded ok. I then went back to 2 wheel high and after a few miles, the sound came back. I was then able to go into 4 high, then 2 high and again, the sound stayed away for approx 40 miles, then it came back.
I just drove the truck without pulling the trailer and it happened again. When the noise is present, the truck feels like it has some mechanical drag, much like when in 4 wheel high.
Could this be a problem with the transfer case shift motor?
I have not drained the transfer case yet.
6.0 L engine
3.73 gears
153,000 miles
Recently while towing my 4500 lb trailer, I began to hear a noise coming and going while going up a few small grades at approx 70 mph. I then let off the throttle, selected 4 wheel high and everything sounded ok. I then went back to 2 wheel high and after a few miles, the sound came back. I was then able to go into 4 high, then 2 high and again, the sound stayed away for approx 40 miles, then it came back.
I just drove the truck without pulling the trailer and it happened again. When the noise is present, the truck feels like it has some mechanical drag, much like when in 4 wheel high.
Could this be a problem with the transfer case shift motor?
I have not drained the transfer case yet.
#2
sounds like its possible that the shift motor is acting up but its hard to say with out draining the case and seeing what you find...........I would take it to a shop and run the codes and do a live scan while it is being driven (takes a special scanner) this will shed lots of light on the issue
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mulscomanagement
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09-11-2010 12:12 PM