Wiring diagram 06 chev trailblazer

This vehicle will not crank over with the key. But will start when i put power to the ignition side of the starter. I checked the start fuse it is good.It has power to the start fuse when the key is in crank position.I Changed the start relay with a known good relay.

2006 Trailblazer 4.2 2006 Envoy 4.2
Customer Concern:
No crank, the starter will not engage when the key is turned to the start position.
Average Reported Mileage:
77912
Tests/Procedures:
1. With the key in the run and start position check for Battery Voltage (B+) at fuse #22 in the under hood fuse block.

2. If there is less than B+ at #22 fuse check for B+ with the key in the run and start position at connector C201 at the steering column harness to the I/P harness, at the base of the steering column pin C6 Pink wire.

3. If there is less than B+ at pin C6, check for B+ at pin D2 Red wire of the same connector.

4. If there is B+ at pin D2 but not at pin C6, replace the ignition switch.

Identifix shows 5 confirmed fixes for this problem, replacing the ignition switch.

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