Under the hood on the driverside of the Cherokee is the PCM or Powertrain Control Module. The Transmission Control Module or TCM is under the dash on the driverside. It's actually kinda of small, I would guess 4 inches by 3 inches. with what look like wings coming off the sides and two bolts.
Engine control module
The Transmission Control Module for your Grand Cherokee is located under the driver side of the instrumentation console (underneath the dash) up against the fire wall near the outside of the vehicle. You should be able to see it with a flashlight as the TCM has and orange/yellow connector.
If it is a 6 Cly. the most likely location is at about 11:00 on the bell housing looking forward. Very hard to get to and drooped bolts may end up in your transmission bell housing. Magnetic sockets and small hands advised.
It is a small computer inside the dashborad, almos behind the head light switch, it contros wiper blades, and some electrical thing of the jeep, it also stores the the vehicles mileage history, changing this will change your odometer reading.
I do not believe there is such a thing as a tcu. there is an ECM (engine control module), and a TPS (throttle positioning sensor) TCU: Transmission Control Unit. On a Jeep Cherokee (not sure about the Grand Cherokee), it's located on the passenger side behind the dash. You can reach it from the bottom without removing anything, but it is easier of you remove the bottom of the dash.
The 2007 Jeep Grand Cherokee transmission control module is located on the back of the transmission. The transmission control module will be in the upper left-hand corner of the transmission.
TCM Transmission Control Module
It controls the transmission shifts.It controls the transmission shifts.
how the transmission module works
Transmission control module.Transmission control module.
It does have a computer, no programming should be necessary.
Driver's side quarter panel in the engine compartment.
location pull out glove box its located lower right side
The transmission control module (TCM) in a 2003 Nissan Pathfinder is typically located on the driver's side, near the transmission. It can often be found on the side of the transmission or mounted on the firewall, behind the engine. For precise location, it's advisable to consult the vehicle's service manual or a repair guide.
The 1998 Cadillac transmission control module can be found on the side of the transmission. The module will be on the right hand side of the transmission, near the back.
The transmission control module is mounted under the dash. It is on the driver's side, beside the ECM module.
The 1993 Jeep Grand Cherokee engine control module is located on the firewall in the engine compartment. The engine control module will be on the passenger side of the firewall.