If it says the 3 cylinder is having trouble why are you worrying about the fuel pump? Check the plugs and wires.
I'm not a mechanic / technician but I BELIEVE if the fuel injector is restricted so that the proper air - fuel mixture is not getting to an engine cylinder , that an engine cylinder misfire can occur ( that is only one of the causes of an engine cylinder misfire )
p0302 is cylinder 2 misfire, you need to fix the cause of the misfire. Possible causes are plugs, coils, injectors......
Usually the occasional spark plug that needs to be cleaned and gapped.
It means that more than one cylinder has a misfire history. PO301 would be cylinder number 1 misfire. PO302 would be number 3 cylinder misfire.
P0300 multiple cylinder misfire. You need to check plugs, wires, coils, injectors........
po300-Random/multiple cylinder misfire detected. po303-Cylinder no. 3 misfire detected. po306-cylinder no. 6 misfire detected po300-Random/multiple cylinder misfire detected. po303-Cylinder no. 3 misfire detected. po306-cylinder no. 6 misfire detected
CLEAN THE INJECTORS. OR HAVE THE INJECTORS CLEANED BY A GM TECH.
Cylinder #4 misfireCylinder #4 misfire
Cylinder #2 misfire.Cylinder #2 misfire.
Stop by http://www.coloradofans.com there are different people that have had that problem. you can probably message them personally and see how they got to that problem. P0300= Random/ multiple cylinder misfire detected P0301= Misfire detected- cylinder #1 P0302= Misfire detected- cylinder #2 P0303= Misfire detected- cylinder #3 P0304= Misfire detected- cylinder #4 p0305= Misfire detected- cylinder #5 P.S. These are Diagnostic trouble codes, not vechicle id numbers.
Misfire in Cylinder No. 8.
Random misfire, cylinder 2 misfire, and cylinder 3 misfire. see related question below.