Help transmission won’t shift

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Nov 5, 2020 | 08:57 PM

#21

lionelhutz

Race Director

Joined: Apr 2007

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From: South Western Ontario

For a '0411 or equivalent PCM, yes those are the VSS sensor pins. Maybe try swapping them just to see what happens?

Nov 5, 2020 | 09:16 PM

#22

tystang2001

Thread Starter

Intermediate

Joined: Jul 2020

Posts: 46

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Funny you said that. I tried swapping.

I think the only thing left it could be is either bad VSS sensor or something wrong in pcm.

anyway to check the sensor itself? I just replaced it but I’ve seen stranger things than getting a bad one.

is it possible the new (refurbished) pcm has an issue with reading the signal? From reading the pcm I think it came out of a 4.3l v6 not necessarily a corvette but it seems all the pins etc are the same.

Nov 5, 2020 | 09:23 PM

#23

lionelhutz

Race Director

Joined: Apr 2007

Posts: 11,152

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From: South Western Ontario

I think it generates an AC signal so pull the wires out of the connector, put your meter on AC volts and run it on jack stands so you can measure for voltage on the wires.

Nov 8, 2020 | 10:56 AM

#24

Supercharged111

Safety Car

Joined: Jan 2012

Posts: 3,956

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From: Da U.P.

Quote:

Originally Posted by lionelhutz

My understanding is that you can't switch a manual tune into an auto tune by modifying the tables and scalars and flags. You have to segment swap the automatic transmission segment into the manual bin or simply start with an auto bin which is easier since they already exist.

P01 just refers to the 512k PCMs and P59 just refers to the 1M PCMs I believe.

OP was the new PCM plucked from a manual car? I never saw you confirm or deny.