ACDelco Oil Filter Lookup: Verify PF and GM Part Numbers
Use current GM and ACDelco information to identify an oil filter, reconcile PF and GM numbers, and resolve old labels or catalogue conflicts before buying.
Spark Plugs
Coolant on Spark Plugs: Wells, Cylinders and Diagnosis
Coolant around a spark-plug well differs from coolant inside a cylinder. Learn how location, symptoms and vehicle-specific tests guide the diagnosis.
Can Spark Plugs Turn On the Check-Engine Light?
Understand how spark plugs can trigger an engine warning, what flashing lights and misfire codes mean, and why a scan code does not identify the failed part.