Thread: P0121 code trans not shifting right

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#1 Re: P0121 code trans not shifting right
02NavyBlue

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10-16-2013

You put a new TPS on it and still have the P0121? Or still having the trans issue but no more code?

2006 Grand Prix GT S/C 109k - Modded Transgo Shift Kit, Gutted Airbox, Dash Cam, and Inlays. Retros soon to come.
2002 Grand Prix GT N/A 127k - Same as 06 Plus: Trans Cooler, DIY Aux Input, LED lighting, Suspension Upgrades, Tint, Retrofits. Sold.

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