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Old 03-06-2014, 05:06 PM   #1
joepa330
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Join Date: Feb 2014
Location: Frackville
Posts: 2
Zinging noise.. Only way to describe it

2000 GMC Sierra SLE, 5.3L, np246gm trans.
Got truck stuck in mud/snow, tried to rock it, reverse/drive, multiple times... Then wouldn't go into gear, and just heard a noise that can best be described as taking the letter z and riding it out. ZZZZZZZZZZZ. Dropped transfer case, thinking chain was stripping gears, but everything looks like new, no chunks or fresh shavings. Was told that transfer case is seperate fluid from trans, but now have trans fluid on my driveway , coming from output shaft area of trans ... Anybody got any idea why I don't have a truck yet ? I miss my baby!!!!
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Old 03-07-2014, 07:33 PM   #2
clinebarger
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Join Date: May 2009
Location: Fort Worth, TX
Posts: 6,370
Re: Zinging noise.. Only way to describe it

Pull the transmission pan & look for metal, Could have shelled a rear planetary.
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Old 03-08-2014, 11:13 AM   #3
joepa330
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Join Date: Feb 2014
Location: Frackville
Posts: 2
Re: Zinging noise.. Only way to describe it

Ok, I'll do that. I started the truck up without the transfer case on, and tail shaft from tranny was spinning. Is it supposed to spin while not in gear? Also, tranny fluid is coming out tail shaft, I thought this wasn't supposed to happen. The tail shaft won't spin by hand while truck is off. Buddy of mine said that there may be something wrong with something on bottom of inside of trans, something like a clip or something that puts and holds it in park.
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