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Tire Size Change Affecting Dic ?

bubba9459

By bubba9459
February 16, 2010 in Ask A GM Technician

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bubba9459

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bubba9459

Posted February 16, 2010

Posted February 16, 2010

I recently switched from 30" to 32" tires, Now my Fuel range reading in the DIC is way off.

Right now, it shows 208 mile fuel range, with a little more than 3/4 tank of gas.

When I filled it up yesterday The DIC showed 326 mile fuel range, when it is normally in the 420's

Can the computer be reprogrammed to the new tire size ?

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