Circuit/System Verification
WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
Observe the Engine Controls Schematic for the ignition coils/modules, and review the Ignition System Specifications to verify the following:
- The ignition coil/modules are correctly connected
- The proper firing order
- The proper spark plug type
- The proper spark plug gap and torque
Refer to Ignition System Specifications .