2000 escalade ..slight misfire...getting codes: P0300,p1345,p0122...burning gas

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escaladeking

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HEY JUST JOINED THIS SITE..
p1345..valve timing off or cam sensor or crank sensor loose.
p0122..tps sensor open or shorted internally /check connector and wiring sensor.
p0300..cylinder misfire detected....faulty spark plugs,ignition wires,coil.
vacuum leak .
injector fault....
TRUCK GIVES HESITATION/STUMBLE..I SMELL GAS SOMETIMES TOO IF I AM FLOORING IT OR AT A HIGHER SPEED ON HIGHWAY..
SOME TIMES IT WON"T MISFIRE..(EX.)STEPPING ON GAS LIGHTLY.OR IDLE
..
JUST DID.
SPARK PLUGS AND FUEL FILTER,CHECKED ALL SPARK PLUG WIRES 1 BY 1 WHEN RUNNING AND NO CHANGE IN IDLE
 
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