Transmission in "limp" mode after tune install

[2000limitedhoe]

I installed my bbp yesterday and took it for a drive. The tranny was in limp mode the entire time this PCM was installed. I switched the pcms back and my problem went away. I switched the again earlier and the same issues were there. I switched them again and with my factory PCM everything is fine. I checked the fluid and it is good, and nno problems at all with the factory PCM. I've been in contact with Justin from bbp and he is helping a lot. I just want some of you guys out there that might know what the deal is to give your opinion.

 

[Awakened]

This is from their website... maybe it applies to you.

Will I need to perform a Crank Relearn procedure with your tune?

Yes, as with all other tunes that involve swapping out the stock PCM for a tuned one that was previously in another vehicle, you will need to perform a crank relearn procedure. Any dealership or shop with a GM Tech 2 or other high end scanner should be able to perform this procedure in under 5 minutes.

Customers that utilize the Scan Cable option will be able to perform this procedure on their own, provided that they have a laptop available to use. This is a potential savings of up to $100, depending on dealership rates. This does not apply to 98-00 Classic Body style trucks and SUVs.