SleeperGXP

Can't afford a TEP need a tranny until I can afford one. Does anyone have one that works with no issues? I can't find one at a salvage yard for less then $1,500. Someone please help need to drive my car again hate not having my own wheels.

streetbanned

I wish you luck bro haha. Just got mine back. Shop had it 40 days fixing my tranny. I was goin nuts without my car

SleeperGXP

Ok I have a 06 GXP what has to be changed to swap a 08 transmission in?

x11 nut

iTrader: (3)

What 08 model? If its a tapshift LS4 trans, then nothing. If its non tapshift, your better off finding the right interchange trans.

LS1 Racing

iTrader: (15)

I'm pretty sure there's a difference in the electronics of an 06 trans versus the 08.

SleeperGXP

Can I get a for sure on this?

LS1 Racing

iTrader: (15)

Maybe contact Dave @ TEP and ask him.

Ill_Born_ss

The internal wiring of the transmission is the exact for all Pontiac 4T65E-HD`s but... the external harness on some models (07 but don`t hold me to it) had a wiring problem. It had to do with the Temp sensor and the neutral saftie switch. The 08 harness corrected the problem so if you can get the harness with the transmission you will be golden! ( same connectors for all versions, just better assembly for the 08)

SleeperGXP

What about using my 2006 wiring harness

Ill_Born_ss

Yes, as I said the connectors are all the same at/on/in the trans. The harness is different inside for the 07+ due to a different ECM

91parkave

iTrader: (4)

both 05-06 and 07-08 use T42 trans controllers and have the exact same connector ends with matching circut numbers and descriptions according to the FSM. while the ECM did change from E40 to E67 the TCM didnt

SleeperGXP

So the swap will be 100% plug and play. Thanks guys

91parkave

iTrader: (4)

To ensure there's no install issues I would hit up dave@tep to be 100%

x11 nut

iTrader: (3)

I looked up wiring diagram and the 07+ have park/neutral line in the 5 wire connector that the 06- dont. Not sure if it'll affect much, but the rest is all the same. One of the reasons the trans is listed as a different part number between years is the update temp sensor inside the trans.