2003 GMC Yukon | New battery now dead climate control!

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Thread: 2003 GMC Yukon | New battery now dead climate control!

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    Walking
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    2003 GMC Yukon | New battery now dead climate control!

    I recently had to replace my car battery in my 2003 GMC Yukon XL. Since then, the front climate control panel will not light up, or, subsequently, allow me to manage the heater or the a/c. The rear system seems to work fine. Checked the two HVAC fuses - all good.

    Suggestions?

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    6.2 Liter LS9 Supercharged V8 MrCritical's Avatar
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    Re: 2003 GMC Yukon | New battery now dead climate control!

    If someone tried to boost the old battery before replacing it, they got something crossed, and shorted out the head unit

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    Re: 2003 GMC Yukon | New battery now dead climate control!

    Any suggestions?

    Find the nearest cliff?

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    6.2 Liter LS9 Supercharged V8 MrCritical's Avatar
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    Re: 2003 GMC Yukon | New battery now dead climate control!

    A new climate control head unit

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    Re: 2003 GMC Yukon | New battery now dead climate control!

    Alternator?

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    2.4 Liter SIDI ECOTEC Lloyd-TX's Avatar
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    Re: 2003 GMC Yukon | New battery now dead climate control!

    Just for giggles - try this quick-fix.

    Disconnect the negative cable from the battery and touch it to the positive cable for a few seconds. This causes ALL ECUs in the vehicle to reset and can fix a multitude of weird issues. It's worth a try . .

    I own an independent repair shop and you wouldn't believe how many weird issues we've repaired with this little trick.

    Good luck!
    Later,
    Lloyd C.


    2008 GMC Sierra Denali, 2WD, Vortec 6200/6L80E, Silver Birch w/ Ebony Leather


    2013 Can Am Commander XT, 4WD, Rotax 1000/CVT, Bumble Bee Yellow w/ black guts

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