Can anyone tell me how they have spent to fix the 4wd problem. on 2005 GMC Yukon XL 1500

Can anyone tell me the cost to fix 4wd

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2 answers 2 comments
Not without some idea of what the problem is. Have system scanned and post codes.
thank you. So should I have them look at the rear differential and the transfer case
agree with pushrod but you can spend as much as 2500.00
thanks So should I have them look at the rear differential and the transfer case