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Q: no start on 1999 Chevrolet Tahoe

diagnostic encoder read p1416 & po442
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neither code will prevet the car from starting. 442 is an evap code and 1416 is an air pump code. these can be addressed after the vehicle is repaired.
you need to have the basics checked like fuel pressure and spark. a shop can do this with a scan tool and identify the failure.

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