Q: How to remove and install an ignition coil in a Chevrolet Equinox and GMC Terrain?
A: Disconnect the cable from the negative battery terminal. Remove the engine cover. For 3.4L V6 models, label and disconnect the spark plug wires from the coil pack. Disconnect the electrical connectors, then remove the mounting fasteners from the coil pack. Remove the coil pack. For all models except 3.4L V6 models, remove the air cleaner outlet duct if it will interfere with the coil(s) you're removing. Disconnect the electrical connector and mounting fastener from the ignition coil. Remove the ignition coil from the spark plug. For all models, apply a little silicone dielectric compound to the inside of each boot before installing it. Installation is the reverse of removal.