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Chevrolet
Impala
Trouble Codes
P Codes (Powertrain)
P0300 - P0399
P0303
2002 CHEVROLET IMPALA
20,439 MILES
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What it means when it say cylinder 3 misfire / code PO303
Feb 24, 2013 at 1:36 AM
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ASEMASTER6371
CERTIFIED EXPERT
52,796 POSTS
could be a bad plug, wire, coil or injector.
with low mileage, it may be a plug
Roy
Feb 24, 2013 at 1:39 AM