2010–2016 Cadillac SRX
Save $250 by doing it yourself! Shop cost: $400
Click links to purchase (we earn from qualifying purchases)
| Part Name | Part Number | Price | Buy |
|---|---|---|---|
| ACDelco 41-109 Spark Plugs | 41-109 | $77.95 | |
| ACDelco Ignition Coils | D515C | $225.95 |
About prices: shown prices are estimates from typical Amazon listings and change frequently, and cheaper alternatives may be available. Confirm the current price on Amazon before buying.
💡 Pro tip: Order all parts at once to save on shipping
Follow these steps carefully
Work only on a cold engine. Hot aluminum heads can pull threads when plugs are removed. Disconnect the negative battery terminal if required by your procedure.
Remove any engine cover or intake tube blocking the coils. Label coil connectors or photograph their positions before unplugging.
Unplug the coil connector, remove the coil hold-down bolt, and pull the coil straight up. Work one cylinder at a time to avoid mixing parts.
Blow loose dirt from the well. Use a spark-plug socket with a rubber insert and extension to remove the plug. Inspect the tip for oil, coolant, or abnormal wear.
Confirm the new plug part number and set the gap to the manufacturer specification if required (many iridium plugs are pre-gapped). Start the plug by hand to avoid cross-threading.
Torque the plug to the spec in the service information (typically a modest ft-lb or degree turn after seating). Do not overtighten — stripped head threads are expensive.
Press the coil fully onto the plug, reinstall the hold-down bolt to snug/spec, and reconnect the electrical connector until it clicks.
Refit covers/intake components, reconnect the battery if removed, and start the engine. Listen for misfires and confirm a smooth idle. Clear any residual codes if a light remains.
Test your repair before closing everything up. If something doesn't work right, double-check your steps.
⚠️ Common Mistakes to Avoid
2004–2009
2004–2009
2004–2009
2010–2016
2010–2016
2010–2016