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  1. #1

    Default Transmission in 6.0l problems... please help

    Truck is jerking real bad inbetween shifting points... would a service help or does it sound like im going to be needing a new transmission? The trucks at 90000 miles

  2. #2


    I dont know much about transmission issues, but i know a good way to see if you need rebuild is to drop the trans pan and see if you have any metal filing or pieces laying around. If so a rebuild is in your near future.

    May also check your fluid level to make sure its properly filled first.

    I normally do transmission flushes every 50k miles, some newer vehicles like toyota uses world class fluids which are good for 100k though, check your owners manual for recommended service intervals and make sure thats done. ( see trans pan at this time ).

    maybe somebody else can help you with the actual cause.

    2009 Silverado 1500
    5.3L / 3.73 G80 / 4spd / 4x4 / LWB/ Ext Cab / HD Tow-Haul
    2.25in ReadyLift Level Kit / 3in blocks/ 3500lb HellWig / 265x65x17 Wrangler AT
    K&N Filter / AirRaid MIT / MagnaFlow 2.25" Dual Exhaust / HyperTech MaxEnergy

  3. #3


    How many miles since last trans service? I do mine every 40,000-50,000 miles. I run Mobil 1 synthetic trans fluid. If you service the trans try adding some Lucas trans additive. It helps to desolve varnish that may be making some of the valves in the trans stick.

    2005 Chevy Silverado Z71 Crew Cab
    6" Skyjacker lift w/Edlebrock dual front remote resoviour shocks, single rear remote. Rancho skid-plate.
    17" x 9" M/T Classic Lock Wheels, 35" BFG A/T or M/T tires
    4.10 PercisionGears w/factory locker, T/A Performance rear-end cover
    Banks CAI intake, ported throttlebody, JBA coated headers, over-sized Magnaflow cats, Magnaflow cat back exhaust, Diablo tuned
    B&M aluminum deep transmission pan
    Warn brush guard w/Warn 9.5 XP winch, PIAA bulbs, Line-X bedliner, AWS Black tool chest, Extang tonneau cover
    Weather Tech floor mats
    Cover-Craft seat covers
    Dash mat cover
    Formula One window tint
    One black Lab in rear seat.

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