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Discussion Starter · #1 ·
Has anyone heard of someone replacing their 4-speed auto trans with a 6-speed auto on a 5.3L GMC or Chevy Truck/SUV? Just curious if this has been done before. When my transmission dies I would like to look at doing this conversion if it's not cost prohibitive.
 

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HOT AIR BALLOON OWNER
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14,932 Posts
Not yet, the 6L90E is too new on the market.

Also, the control system of it is based off a CanBus system... that is around an '03+ setup. So, we'll just have to wait and see.
 

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Wanna B Jack o all Trades
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actually the canbus is 07 on the trucks and suvs. Databus on the 03+
 

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HOT AIR BALLOON OWNER
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