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    KathlynV's Avatar
    KathlynV Posts: 3, Reputation: 1
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    #1

    Jan 5, 2009, 07:49 AM
    1999 Chevy Cavalier Computer Installation
    Need guidance on installing the brain box (as the auto salvage yard calls it) in my daughter's '99 Chevy Cavalier.
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #2

    Jan 5, 2009, 08:40 AM

    . Disconnect negative battery cable, recording any radio codes first.

    . Remove major electrical connector from ECM. There may be a connector bolt securing it. Take a small screwdriver and gently pry the connector off the ECM.

    . Remove both nuts from the ECM mounting studs.

    . Remove old ECM and install new.

    . Spray female connectors with WD-40 and button things up.

    Wear rubber sole shoes and ground yourself before touching the new ECM. Static electricity can easily damage an ECM.
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