Have you retrieved a code from the ECM? If so what is the code. Is the speedo working?
The ECM is located under the right hand side of the instrument panel.
i donnoe
passenger floor
under the air box
where is the ecm on a 2000 buick lesabre
The ECU is located behind the glove box upper left!
On the driver`s side under the steering wheel to the left
In 1992 the transmissions were mechanical. The only electronic component was a solenoid to lock the torque converter. It is controlled by the ECM. This is true for the 4-cyl and V-6.
PULL THE UNDER DASH COVER ON THE RIGHT SIDE DOWN AND THE ECM IS LOCATED TOWARDS THE FIREWALL IN A VERTICAL POSITION. YOU WILL SEE THE ECM WIRING CONNECTORS ( I THINK THERE ARE THREE WIRING CONNECTORS) GOING UP TO THE ECM.
I do believe on your model the ECM is located under the right hand of the instrument panel. If you really need to remove the ECM I would likely suggest a Haynes repair manual for this operation.
it's built into the ecm...