blackjack hotrods

Actually, according to my parts catalog, there is a seperate TCM for 06-08. The part number for all three years is the same: 24234503.

avenger09123

Thats cool. I got a paper from GM on the E37, they said it was the most advanced PCM to date because it can control both the engine and the transmission. I assumed that they implemented that total control in the cobalts...cool...didn't know that

blackjack hotrods

The 2 modules work together according to this "little" description:

The transmission control module (TCM) is mounted in the engine compartment and connects directly to the engine wiring harness. A single 49-way connector is used to make the connection between the vehicle wiring and the TCM. The TCM is an electronic control module that receives input or provides output in order to control the operation of the 4T45-E automatic transmission.

The TCM receives the following inputs from the engine control module (ECM):

• Engine speed and torque values

• Engine intake air temperature (IAT), accelerator pedal position (APP) information

• Engine coolant temperature (ECT)

• Kick-down request

• Traction control status

• Air-conditioning (A/C) status

• Cruise control status

The ECM provides this data to the TCM through the controller area network (CAN). The CAN is a 2-wire communication connection between the 2 controllers.

Other TCM inputs are the following:

• Battery and ignition voltage

• Brake switch status

• Transmission manual range switch

• Transmission fluid temperature (TFT)

• Transmission input speed sensor (ISS)

• Transmission output speed sensor (OSS)

The TCM provides the following outputs in order to control the automatic transmission:

• Shift solenoids to control transmission shifting

• TCC PWM solenoid operation to control the apply and release of the torque converter clutch ASM

• Pressure control solenoid (PCS) to regulate transmission line pressure

Other TCM outputs provided to the ECM are the following:

• MIL illumination request

• Vehicle speed

• Transmission input speed

• Transmission fluid temperature

• Commanded gear status

• TCC status

• Torque reduction requests

Jackalope

Wait, I never called anyone here a jackass. That was someone else that was banned and then came back to call us all jackasses and then got re-banned for being a moron! My post was in responce to Brain's post he made when he re-banned said moron.

tru2nrtt777

iTrader: (1)

I know, I was asking you since we were the main ones who called bullshit and you have been here longer than me.