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Old 11-02-2016, 07:58 PM   #1
brcidd
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Transfer case failure 99 Yukon

Just to advise anyone who shall read this-- be it known, that as the internal chain wears inside the transfer case- it can rub the inside of the aluminum housing- causing a pin hole "rub thru" that lets all the tranny fluid out and then cooks the internals- and it locks up. So if I were to have known of this, I could have at least checked the fluid level- mine had a thimble full when I removed the drain plug after it locked up on the wife 100 miles from home.
I highly recommend anyone with 200k+ miles- go out and check your transfer case fluid level- remove the top plug and add as needed- and/or look for the rub thru pin hole...I'll try to get a good photo of it soon.
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Automotive A/C Engineer with:
'99 IH 4700 Toy Hauler
(2) '95 GEO Prizms both maroon
'99 GMC Yukon
'95 Chev 3500, 454 Dually Crew Cab- 145k miles-
Wife's Camel trailer puller.
'94 Astro- 370k miles
'94 Firebird Formula- 5.7L 180k miles- gone-
'92 Chevy Lumina Van 3.8L 264k
'86 GMC S-15 - 2.8L 154k
'87 Buick Park Ave . 187k
'86 Buick Park Ave 3.8L 199k miles- gone
'77 Chevy Vega- 2.5L 175k miles gone but not forgotten
'68 Camaro 396 4 spd RS/SS -72k miles-
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