Po452 code how or what do I have to fix or change on 1999 GMC Jimmy

Code came after I replaced the intake manifold gasket i erase the code but comes back on in mins runs good but when starting I have to crack more then once I also just gave it a tune up but code still comes up any help thanks

by in Camden, NJ on September 20, 2012
1 answer
ANSWER by on September 21, 2012
you have a code for a fuel tank pressure senor OR circuit issue. the sensor is on top of the fuel tank in fuel sending unit. you may just have a circuit issue seek diag and est

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