Transmission stuck in limp mode

1997 CHEVROLET 1500
430,000 MILES • 5.7L • V8 • 4WD • AUTOMATIC
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CADAMS1906
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When the truck is cold it does just fine. But once I start driving and stop and shut the truck off the transmission goes into limp mode plus I lose use of my tachometer and speedometer. Have checked the grounds and tried swapping computers.
Dec 15, 2018 at 9:27 PM
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STRAILER
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Hello,

This sounds like the cluster is going bad. here is a video to show you how to replace it with a rebuilt/used unit:

https://youtu.be/_HEC44xENxw

Please let us know what happens. Cheers, Ken
Dec 17, 2018 at 4:20 PM
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CADAMS1906
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Tried swapping clusters didn't change anything.
Dec 17, 2018 at 10:32 PM
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STRAILER
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Sorry, lets run the codes to see what comes up. Here is a guide.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please let us know what happens.

Dec 18, 2018 at 10:23 AM