i got a 6spd tranny at cal speed

 

I have installed the 4L80e in my 08 silverado and still haven't found an RPM signal. For the transmission to shift at the rpm I want it to.
Now I use the speed to shift in cruising but TCI TCU requires an rpm signal to **** at WOT.

 

Rick you said you had a 6-speed installed you had Jim do that for you? Does everything work good as far as the wiring goes because if so that'd be even easier since Jims the tuner for my truck anyway.

 

did your truck originally come with a 4l60e or 6l80e?

 

I think maybe he means he has 1 for sale at the shop. could be wrong tho...

Unfortunately, his beast came with a 60e...

 

A 6l80 shouldn't be a hard swap into a GMT900. Just need the shifter stalk for the tap shift and add the wires and flash the PCM. Just compare a wiring diagram for a 4l60/70 truck to a 09 1500 6l80 truck. Add the wires and connections for the trans. You might have to swap dashes maybe. Seems easy enough. You'll need driveshaft mod. and crossmember as well.

 

Came in 60e and I hated that tranny my friend 09 sierra 60e broke today and it has 8000kms on the clock

 

sure enough i called jim today and theres a few things to do the swap but hes done them before and told me if i get him the 6l80e then for the parts he needs to get for the swap plus install and tune 1500 bucks.

 

makes me wanna get a new truck, a new RCSB with a 6.2 and 6l80e would be sweet ****

 

I know where someone can pickup a 6.2L if they're looking...just throwing that out there Parker...you never know