2009 Chevrolet Trailblazer Ignition Coil

First, you need to remove the Knock Sensor harness connector. Then, please remove the knock sensor retaining bolt. Finally, you should remove the appropriate knock sensor.

First, you need to use a scan tool to retrieve the percentage of remaining engine oil. Then, please disconnect the negative battery cable, disconnect the engine wiring harness electrical connectors from the ECM, disengage the retainers securing the ECM to the bracket, and remove the ECM from the bracket. Finally, you should remove the ECM bracket bolts and nuts, and remove the ECM bracket from the studs on the intake manifold.

First, you need to disconnect the negative battery cable, disable the SIR system and lower the hush and knee bolster. Then, please install an Allen wrench into the hole on top of the lock cylinder housing, Finally, you should slide the lock cylinder out of the lock cylinder housing.