Spark Plug – GM (19307141)

Spark Plug converts a physical condition into a signal the powertrain module acts on. The module compares that signal against an expected range at every start-up, so a failing unit is usually logged before it becomes a driveability complaint.

Replace the Spark Plug when the fault repeats with the harness already ruled out, when resistance drifts as the part heats up, or when a connector has corroded past cleaning. Swapping a sensor to chase a wiring fault is the most common wasted repair on these circuits.

Ordering reference for the Spark Plug is part number 19307141, categorised under Spark Plugs & Ignition. Match that number against the component you are removing before you order.

Genuine GM supplied for this Spark Plug, with the engineering number unchanged from the factory reference stamped on the original.