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Thread: Trans down shift problem

  1. #1
    Join Date
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    Trans down shift problem

    When I hit the pedal and it downshifts to the passing gear, the motor revs then about a second later it downshifts. I was thinking that this might be due to a need for a trans service. My truck has 52,000 miles and I have never serviced the trans. Could this be the problem?
    2005 Silverado 4x4, 6" RCD lift, M/T Classic locks on BFG KM2's, 4:56 gears, Air-raid CAI, TB spacer, Nelson tuned, Corvette servos, 160 thermostat, Ebay long tube headers, Flowmaster Delta 40, Cognito Motorsports steering upgrades. 2000 Ford Lightning, 2.3 KB, bolt ons, 7.67 on the 1/8th.

  2. #2
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    "Passing gear" means different things to different people. You need to figure out in which gear the problem happens. Use manual ranges to know for sure.

  3. #3
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    El centro, Ca.
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    When I hit the pedal to the floor to pass another vehicle. It downshifts, but it takes like a second for it to hit the gear.
    2005 Silverado 4x4, 6" RCD lift, M/T Classic locks on BFG KM2's, 4:56 gears, Air-raid CAI, TB spacer, Nelson tuned, Corvette servos, 160 thermostat, Ebay long tube headers, Flowmaster Delta 40, Cognito Motorsports steering upgrades. 2000 Ford Lightning, 2.3 KB, bolt ons, 7.67 on the 1/8th.

  4. #4
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    Okeechobee, Fl
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    I believe all vehicles do it. I believe it's just the time it takes the computer to realize it needs to downshift.
    Correct me if i'm wrong.
    2006 extended cab, 6.0 swap, full bolt ons SOLD
    2011 ECSB, 6.2, 6 spd, 3.73, 5" lift, 33" nitto, limo tint, debadged, volant CAI, muffler delete, black bear tune 14.0 @ 98 on the 33'sSOLD
    2007 TBSS AWD, cam, stall, built trans, N2OSOLD
    2006 RCSB cammed LQ9, full exhaust, 3200 stall, 2-4 drop
    Quote Originally Posted by farmtruc View Post
    "if i have to explain, you don't get it"

    49 Ford F1
    355 chevy / turbo 350 / 12 bolt posi / camaro subframed

  5. #5
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    That can sorta be normal depending on what car, tune/not, and WHAT GEARS you're talking about. Maybe if we can't get the gears we can get what speed it happens?

  6. #6
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    Okeechobee, Fl
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    I think he is talking 4/2 when passing around 60mph
    2006 extended cab, 6.0 swap, full bolt ons SOLD
    2011 ECSB, 6.2, 6 spd, 3.73, 5" lift, 33" nitto, limo tint, debadged, volant CAI, muffler delete, black bear tune 14.0 @ 98 on the 33'sSOLD
    2007 TBSS AWD, cam, stall, built trans, N2OSOLD
    2006 RCSB cammed LQ9, full exhaust, 3200 stall, 2-4 drop
    Quote Originally Posted by farmtruc View Post
    "if i have to explain, you don't get it"

    49 Ford F1
    355 chevy / turbo 350 / 12 bolt posi / camaro subframed

  7. #7
    Join Date
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    El centro, Ca.
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    ^^^ What he said.
    2005 Silverado 4x4, 6" RCD lift, M/T Classic locks on BFG KM2's, 4:56 gears, Air-raid CAI, TB spacer, Nelson tuned, Corvette servos, 160 thermostat, Ebay long tube headers, Flowmaster Delta 40, Cognito Motorsports steering upgrades. 2000 Ford Lightning, 2.3 KB, bolt ons, 7.67 on the 1/8th.

  8. #8
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    A tune might help a lot but I'm curious what size GIANT tires you must have with 4.56's...

  9. #9
    Join Date
    Jan 2009
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    El centro, Ca.
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    35's.
    2005 Silverado 4x4, 6" RCD lift, M/T Classic locks on BFG KM2's, 4:56 gears, Air-raid CAI, TB spacer, Nelson tuned, Corvette servos, 160 thermostat, Ebay long tube headers, Flowmaster Delta 40, Cognito Motorsports steering upgrades. 2000 Ford Lightning, 2.3 KB, bolt ons, 7.67 on the 1/8th.

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