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2006 gmc envoy_sle
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Discussion Starter #1
Hey all,

I have a for all intents and purposes* stock 2006 Envoy I6, 4wd. It was not always mine, but to my knowledge, the transmission fluid was never changed, and it's got around 185K miles. Knowing the tranny is living on borrowed time, could it be swapped out with something like a T56?

I've searched a bit on the topic, but are there any aftermarket PCMs that could do the job?

Or if I recall, I read about the '08 model year using a separate transmission control module. I'm sure you can switch the 06 PCM for an 08 PCM, but will that make it any easier to bolt up a manual and have the electronics cooperate?
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