Does the ignition coil need to be grounded on a 2003 Chevy Astro?

The ignition coil on a 2003 Chevy Astro, like most vehicles, is indirectly grounded. It doesn't have a dedicated ground wire attached directly to the coil's case. Instead, the ground path is completed through the engine block and the vehicle's chassis.

While you shouldn't need to add a separate ground wire to the coil itself, ensuring a good overall ground in the engine compartment is crucial for proper ignition system function. A poor ground connection anywhere in the system can manifest as ignition problems.