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Re: 1997 P30 Van 4L80E harsh 1-2 shift
Posted to Transmission Forum on 11/27/2009 1 Reply

Leo,

TPS voltage at the TPS was in normal ranges - had a good sweep test. Haven't checked at the ECM connector yet. I assumed the 35% was just a software error, just as the incorrect gear position reading and a few other scan data parameters. I didn't have m... Login to read more.

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