I cannot remember were I saw the testing procedure but it helped me previously diagnose a bad front differential in the same truck. Also The chain in the transfer case is good as my 4 lo still works and I can feel the transfer case and front axle work and bind up as they should. I forgot to...
I have a 2001 gmc yukon 2500 with the 8.1 and am worried about my transfer case a np 246. When I have been backing uphills recently it seams like my 4 hi will not engage. To test I did the standerd put truck into 4 hi and shut the truck off the lift one wheel to see if it spins. I did this and...
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