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PCM computer location

Tiny
DEACON57
  • MEMBER
  • 2005 CHEVROLET MALIBU
  • 2.2L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 84,000 MILES
I know it is not a card but you can unseat and re-seat the ECM ECU PCM to clean the contacts as I had my car give an engine disabled signal on my car and it stalled. A minute later it started and ran like there was nothing wrong. I want to locate the computer so I can disconnect the battery and pull the computer and push it back in to clean the contacts before I have a mechanic charge me $800.00 or $900.00 to tell me they could not find anything wrong. Where is the PCM located in my car listed above?
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Tuesday, May 16th, 2017 AT 12:06 PM

8 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
See picture. be very careful plugging it back in so as to not bend pins, also apply some dielectric grease to contacts for water intrusion. you should also check your fuel pressure with a gauge if no codes are showing auto parts rent it, see link.
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
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Tuesday, May 16th, 2017 AT 12:13 PM
Tiny
DEACON57
  • MEMBER
  • 4 POSTS
  • 2005 CHEVROLET MALIBU
  • 2.2L
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 84,000 MILES
Where is the PCM card located in my car?
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Tuesday, May 16th, 2017 AT 5:14 PM (Merged)
Tiny
STEVE W.
  • MECHANIC
  • 12,976 POSTS
The PCM is not a card, it is the main engine computer. Unless you have a dealer scan tool and access to a programmer and the specific download link for your VIN number so you can program a new unit it is not a DIY job. Very easy to turn the computer into a doorstop.

Why do you want to replace it?
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Tuesday, May 16th, 2017 AT 5:14 PM (Merged)
Tiny
DEACON57
  • MEMBER
  • 4 POSTS
I know it is not a card but you can unseat and re-seat the ECM ECU PCM to clean the contacts as I had my car give an engine disabled signal on my car and it stalled. A minute later it started and ran like there was nothing wrong. I want to locate the computer so I can disconnect the battery and pull the computer and push it back in to clean the contacts before I have a mechanic charge me $800.00 or $900.00 to tell me they could not find anything wrong. Where the PCM is located?
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Tuesday, May 16th, 2017 AT 5:14 PM (Merged)
Tiny
STEVE W.
  • MECHANIC
  • 12,976 POSTS
Engine disabled normally is not a bad connection at the ECM.

The PCM is right in front of the battery.
The BCM is under the dash, right side near the heater blower.
The ICM is on the top of the engine at the rear.
The theft module is attached to the back of the key switch area.

All of those are modules that can disable the engine.
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Tuesday, May 16th, 2017 AT 5:14 PM (Merged)
Tiny
DEACON57
  • MEMBER
  • 4 POSTS
Yes I know, read my initial question, it was about the power-train control module, I just wanted to know where it was located and asked someone else who already gave me the answer along with a schematic which helped tremendously. It is good to know that the other three modules can also disable the engine, thanks anyway.
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Tuesday, May 16th, 2017 AT 5:14 PM (Merged)
Tiny
2CP-ARCHIVES
  • MEMBER
  • 4,542 POSTS
  • 2002 CHEVROLET MALIBU
  • 124,000 MILES
Where is the computer?
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Friday, May 10th, 2019 AT 4:51 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Powertrain Control Module (PCM) Below left side of dash, near steering column.
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Friday, May 10th, 2019 AT 4:51 PM (Merged)

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