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Thread: 07 nnbs transmission issue

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  1. 05-31-2010 09:52 PM #1
    chadt256
    chadt256 is offline Roll Tide
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    07 nnbs transmission issue

    ok so on my 07 sierra with 60,000 miles on it the tranny obvisouly went out.. i stopped at a red light and when i went to take off there was a slip then a loud clunk and it went.. ok so at the next light i stopped again thinking it was nothing, well when i took of this time another clunk then there was no drive or 3 and barely 2 and had park reverse and 1... so its at the dealership under warranty, but what the hell? i dont have a tune, and i really havent had any issues outta the tranny before like no slipping or anything.
    07 sierra 5.3
    Remington edition
    Afe CAI closed box
    SLP Cat-back (stainless)
    20in HD hoss black and chrome

    78 Chevy longwheelbase,350,holley 600cfm,6inch lift
    35'' swampers. 87 bed,fuel tank,doors.
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  2. 05-31-2010 09:56 PM #2
    Mang213
    Mang213 is offline all-pro breaker-inner
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    How heavy does your right foot weigh? You need a tranny cooler at the very least, bro
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  3. 05-31-2010 10:10 PM #3
    molitor's Avatar
    molitor
    molitor is offline Looney Tuned
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    occasionally a tranny makes it off the line and fails soon there-after

    sounds like you were the unlucky 1 in a million
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  4. 05-31-2010 10:16 PM #4
    skeet
    skeet is offline Senior Member
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    it happens !!

    be greatful it happened why it was under warranty
    Simple: 408 on steroids!
    single digits coming soon!
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  5. 05-31-2010 10:30 PM #5
    TvsQuez's Avatar
    TvsQuez
    TvsQuez is offline The Professor
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    many nnbs trucks have had tranny problems. Welcome to the club, and keep it warrantied.
    07 nnbs ecsb 5.3, full bolt on, Blown. 6.0 swap going in now, and maybe 100 shot. To be continued...
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  6. 06-01-2010 12:11 AM #6
    chadt256
    chadt256 is offline Roll Tide
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    i guess so.. oh well glad it is under warranty.
    07 sierra 5.3
    Remington edition
    Afe CAI closed box
    SLP Cat-back (stainless)
    20in HD hoss black and chrome

    78 Chevy longwheelbase,350,holley 600cfm,6inch lift
    35'' swampers. 87 bed,fuel tank,doors.
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  7. 06-05-2010 12:00 AM #7
    keniff
    keniff is offline Paid Off
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    ive been lucky that nothings gone wrong with mine...and with the added power...uh the dealer will not warrenty a 400+hp 6.2 lmao but it's ok...either a built tranny or a 80e swap is in the future anyways
    2008 GMC CCSB 6.2/6L80e swap
    Gen IV 5.3/60e swap 1994 ecsb W/T
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  8. 06-05-2010 11:45 PM #8
    Vince_B
    Vince_B is offline Senior Member
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    It sounds like the input sprag has failed in your transmission. Vince
    Goodbye from Vince @ FLT thread.http://www.ls1tech.com/forums/racers...vince-flt.html
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