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  #1  
Old 10-21-2004, 05:07 PM
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MyTOY MyTOY is offline
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Tranny upshifts hard
I just bought a 97 Sierra 4x4 5.0 Automatic.
When the trans warms up it upshifts really
hard into 2nd. Slams, actually. Scared the hell
out of me. What's the deal? Thanks
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Old 10-22-2004, 03:15 PM
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Never Mind. I researched the prob. and didn't have to look far.
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Old 10-24-2004, 04:33 PM
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Re: Tranny upshifts hard
Just curious, what did you find out???
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Old 10-24-2004, 05:02 PM
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Re: Tranny upshifts hard
common valve body guide wear causing the computer to tell the trans. to act nuts and
an engine code P1870. Hopefully a bore/sleeve kit
will be all it needs.
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Old 10-30-2004, 06:42 AM
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WRONG!! tranny needed rebuild & Torque converter.
I just bought it so I didn't have to pay. Lucky!
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