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Thread: 04' tranny help

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  1. 04-19-2009 08:35 PM #1
    theduck007
    theduck007 is offline Junior Member
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    04' tranny help

    hi guys, new to the forum. i have a 04' silverado 1500 5.3. i read through a bunch of stuff on here and have an idea what my problem is but would like ur thoughts on it. recently my tranny has been slipping from 1 to 2nd under normal driving conditions but if i stand on it, it shifts just fine. so i need more pressure and every couple days i notice it from 2-3. so i need a vette servo or tune. if you could give me a direction to go and it would be greatly appreciated. also i couldn't fine a write up on the servo install.
    thanks for any help
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  2. 04-20-2009 12:08 AM #2
    GasGuzzler's Avatar
    GasGuzzler
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    By the time you feel that it probably needs more than mods, probably needs rebuilt.
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  3. 04-20-2009 12:10 AM #3
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    WARLOCK
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    2000 Silverado ECSB- 5.3 CAI, Pacesetter LTs, ORY- Pipe, Magnaflow XL, E-fan, Ported T/B , Nelson Tuned, Built 4l60e, Circle D Stall, 3.42s G80, 2-4 Drop, Hertz Highs, Rockford 501s

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  4. 04-20-2009 12:13 AM #4
    ma.racing's Avatar
    ma.racing
    ma.racing is offline clint chipley@maracing
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    4l80e would be your best bet you won't ever have trany probs again
    04 1500 5.3L custom hp tuners tune by myself don have a pic of it yet so hear is my old 01 chevy 5.3 460hp 13.669 @ 116
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  5. 04-20-2009 07:15 AM #5
    theduck007
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    well thats not what i wanted to here so i guess i'll start looking around. but why does it shift just fine when you run it hard?
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  6. 04-20-2009 11:12 AM #6
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    Quote Originally Posted by theduck007 View Post
    well thats not what i wanted to here so i guess i'll start looking around. but why does it shift just fine when you run it hard?
    Mine will do that in 2nd also right when it's shifting to 2nd....let off, it grabs then everything is fine. Happens like maybe once a week. Only 41k miles on it. I'm installing the vette servo and transgo anyway to see how long it lasts. Once it goes I'll go either 4l80 or built 60. Mine is the same way under full throttle, doesn't slip at all. Just everynow and then when your baby'n it, it slips shifting to 2nd.
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  7. 04-20-2009 07:19 PM #7
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    ma.racing
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    Quote Originally Posted by theduck007 View Post
    well thats not what i wanted to here so i guess i'll start looking around. but why does it shift just fine when you run it hard?
    Your line psi is higher when your at wot
    04 1500 5.3L custom hp tuners tune by myself don have a pic of it yet so hear is my old 01 chevy 5.3 460hp 13.669 @ 116
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  8. 04-20-2009 01:43 PM #8
    GasGuzzler's Avatar
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    Possible debris in valve body or sticking valve that frees up under higher line pressures.
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  9. 04-20-2009 07:20 PM #9
    theduck007
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    its not too bad, it only does it once in a while under the right load. i think i'll just the vette servo and see how thats changes it. for $25 can't hurt. thanks the for the responses, if anyone else has any advice keep it coming.
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  10. 04-20-2009 07:54 PM #10
    theduck007
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    4L60E, 700R4, 4L80E, 4R100, E4OD, 2004R, C6, TH350, TH400 Transmission: SONNAX 4L60E PINLESS FORWARD ACCUMULATOR
    can someone tell me if you have to remove the transmision to install this. thanks
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