LT1-LT4 Modifications 1993-97 Gen II Small Block V8

4l60e vss sensor

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Old 01-05-2009, 12:58 AM
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Default 4l60e vss sensor

Are the sensors the same for a tranny from a roadmaster compared to one from a f-body? The pcm thanks I have 3.08 gears when in fact I have 3.23. Will this throw the speedo off?

Project swap 60,000 mile impala ss lt1 into 85 Trans am is almost done.
Old 01-05-2009, 03:22 AM
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The PCM thinks that ratio cause that is what is programmed into the PCM, that has nothing to do with the VSS. Yes it will throw the Speedo off, it will read faster than it is actually moving.

All the VSS does is pick up the signal from the Reluctor Ring on the Output Shaft of the Transmission. For the 4L60E it's a 40-Pulse Signal.



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