Question about 2001 GMC Sierra 2500HD

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Upper and lower thermostat on a 6.6 diesel

I was told by the parts store that my truck has 2 an upper and lower thermostat.

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  • bob collins
    bob collins May 11, 2010

    I know there is a question but for the life of me I don't see it

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Yes there are two, one upper front and one right rear. Here are the AC Delco #'s Source: rockauto.com

ACDELCO Part # 131163 Upper and lower thermostat on a 6.6 diesel - moreinfo.gif {#97241129}
THERMOSTAT,ENG COOL W/GASKET, FRT, 185 DEG $30.79
ACDELCO Part # 131131 moreinfo.gif {#97241130}
THERMOSTAT,ENG COOL RR, 180 DEG $31.79

Posted on Jan 10, 2009

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    25b20684-c99d-4017-ab4e-6f100984ab7c.gif
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    2_12_2012_9_47_51_pm.gif2_12_2012_9_54_26_pm.gif

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