4L60/65 Tap Shift may be possible

[Torqueup]

yeah i knew what he meant. just taking a look now. looks like there is no wire in pin5 of the pim module.

so i put a wire on and touched it to ground, nothing come up on the dash. I'll run my 2new wires for the tapshift control to see if i can get it to activate without touching the tcm tune.

1 wire is just a 12v switched source, the other is the wire to tcm.

 

[Fu Manchu]

Watch some of his videos on the Youtubes. He is finding some really cool features buried in the software and a mix and match of VE and VZ modules.

As an example:

 

[Torqueup]

so the active select wire does trigger & can be monitored via tech2 pim. quick short to gnd to active/deactivate.
however tapshift still isn't working. I can see the trans is seeing the up/down paddles working, it's just ignoring them.
tried all the options in hpt/efilive with no luck.

it's similar to what i would see with a 6l80e when the shifter is in the wrong spot to activate.

 

[Fu Manchu]

What about using a VF shifter?

 

[Torqueup]

What about using a VF shifter?

ve & vf shifter do it via bcm which sends it out over the can. the vz paddles are direct wired to the trans controller.

i'll take a look at the tcm code to see if any of the instructions are similar to the t43/6l80e controller in case it's a switch that is not turned on, but i wont spend too much time on it, since it's coming out anyway.

 

[Fu Manchu]

The VE shifter has been used by @CWG and one of the very early conversions on a VZ SS Crewman used a VF shifter. The VF shifter really looks the goods in place of the VZ one.

The link is in one of the previous posts.

 

[Torqueup]

doesnt really matter what shifter u use, if anything using the ve/vf shifter makes it harder. the vz paddles have the correct resisters built in.

During my testing i tried changing the programming in the dash cluster & pim to the 5l40e, changing the dash just changes to match what the 5 speed shifter looks like;
P R N D 4 3 L

When you change the PIM to a 5l40 however got me excited as that enabled the reverse lamp output when you go to reverse. It never goes active when configured as a 4l60/65e because reverse is handled by the NSBU switch on the side of the box.

 

[Torqueup]

I've replaced the 4l65e/t42 controller with a 6l80e, i did a quick/nasty wire in job for the 6l by tapping into the relevant pins in the old t42 controller plug, 1 wire direct to the ecu for the neutral safety.

Bunch of changes in ECM/TCM.

Dash is happy, trans shifts through the gears.

I'll pull the harness off, strip the old controller wiring out & 6l80 wiring in.

 

[Lex]

I've replaced the 4l65e/t42 controller with a 6l80e, i did a quick/nasty wire in job for the 6l by tapping into the relevant pins in the old t42 controller plug, 1 wire direct to the ecu for the neutral safety.

Bunch of changes in ECM/TCM.

Dash is happy, trans shifts through the gears.

I'll pull the harness off, strip the old controller wiring out & 6l80 wiring in.

Was the trans shifting through the gears ok too with the paddle shift?

 

[Torqueup]

yep. paddles are wired direct to the box tcm.

Just need to have the correct settings in the tcm tune. I already do that for my own cars/customers in conversions. It's called hardwiring & was used on the corvette platforms too.