passenger floor
In a 2003 Buick LeSabre, the Engine Control Module (ECM) is typically grounded through a ground wire that connects to the vehicle's chassis. You can find the grounding point near the ECM, which is located under the dashboard, usually on the driver's side. It’s important to ensure that the ground connection is clean and secure to avoid electrical issues. If you're troubleshooting, you may also want to check other ground points in the engine compartment.
The ECM is located under the right hand side of the instrument panel.
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under the air box
The ECM is located on the driver's side, under the hood on a 2003 Pontiac Montana. It is on the driver's inner fender.
The ECM (Engine Control Module) fuse for a 2003 Buick Rendezvous is typically located in the under-hood fuse box. To access it, open the hood and locate the fuse box on the driver's side near the battery. The specific fuse for the ECM is usually labeled in the diagram on the fuse box cover. Always refer to the owner's manual for the exact fuse location and specifications.
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
its under th passenger side dash behind the glove box
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.
uNDER THE PASSENGER SEAT.