Skip the auto shop - Our mechanics make house calls

Q: where is the ecm located in my 2001 lesabre and how do I get the part number off of it

asked by on

I need to replace the ECM and to do that I need to locate it and get the exact part number so I can order a replacement. Where exactly is the ECM located in my 2001 buick lesabre, with a 3.8 v6

A: Hello - to answer your location question, t...

Hello - to answer your location question, the ECM is behind the fuse and relay block of electronics under the passenger side of the dash (behind the glove box). The ECM is behind the other electronics, mounted flat against the firewall, and is an aluminum box about the size of a good hardbound book. The part number should be on a decal on the outside of the ECM. As for you stalling, several problems could cause this. These include a dirty or failed idle air controller, an air leak to the intake system, a dirty throttle body, an EGR valve stick (even slightly) open. What problem codes are still present causing the Check Engine light to illuminate? These should be helpful. I would recommend having a Car Is Stalling Inspection completed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Check engine light staying on

The definition of the fault code you are seeing signals back to a problem with the system fuel pressure. The fuel pressure may be too high or too low. The pressure readings from the sensor to the ecm may be...

Q: High and low beams not working

Jeeps are known for having headlight switch issues. If fuses and relays are good, the headlight switch is the most likely culprit. If you need help with getting this fixed, consider YourMechanic, as a certified technician can diagnose the issue...

Q: Black soot and bad smell coming from the heater vents.

Hi there. Sounds like the cabin air filter to the heating and a/c system is degrading and peeling apart. The stuff that is coming out into the cabin area is a filter full of dirt and debris. I recommend replacing...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...