03 transmission - Help

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Mar 10, 2009 | 08:47 PM

lifisgood

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Joined: Mar 2009

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03 transmission - Help

i have a o3 duramax with 4' silverline exaust and a quadzilla steath 2 tuner and every time i run 135hp more the transmission will lock in 5th gear and stay there. and win i put it back to stock it wount do it.

Mar 10, 2009 | 09:51 PM

uwyo_dmax

Diesel Enthusiast

Joined: Oct 2008

Posts: 197

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From: Laramie WY

sounds like your slipping the trans and going into limp mode, are you getting any codes or anything.

Mar 10, 2009 | 11:33 PM

2500HeavyDuty

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Joined: Oct 2007

Posts: 14,872

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From: Houston, Tx

i limped my transmission within 5 minutes after i got my quad tuner. and i had set it at 135 when i first got it

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