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  1. #1

    Default 89 Suburban computer and check engine light location

    Does anyone have pics of where the ECM is on an '89 Suburban? Where is your check engine light? and where does the wiring harness go through the firewall into the cab for the computer? Pics would be great if possible. Thanks

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  2. #2


    ECM is above the glovebox on the passenger side, bolted to the top of the dash. The Check engine light in the clusher is the left lamp in the lower section of the speedometer I believe. Not sure where the wiring harness for the computer goes through the firewall, but I think it's on the drivers side low in the fender like usual.

    1991 Chevy Suburban 1/2 ton 2WD w/ chevy SBC 350-3/4 ton drivetrain upgrade w/4.10 gears 200K miles
    2005 Saturn ION-2 Stock 277K miles
    1982 Bronco, 1993 Bronco (sold), 1971 M35A2 Deuce and a Half

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