P3503 Diagnostic Trouble Code Discussion for December 2023
Cylinder 3 misfire
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| Help Request | Posted | |
| 2015 Chevrolet Express 2500 4.8L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 1GCWGFCF8F P3503: Cylinder 3 misfire. The van came in with rough idle, missing, loss of power exhaust leaking at manifolds. We scanned for codes. found the codes listed above. With the high miles did a tune up.I still has same miss fires. Tried swaping plugs, wires and coils from cyl 5 that ha... |
December 20, 2023 |
