Where is the starter safety switch on a 1989 GM sierra?

The 1989 GMC Sierra doesn't have a single, easily identifiable "starter safety switch" in the same way some vehicles might. Instead, the safety mechanism is integrated into the system with several components working together to prevent accidental starting:

* Neutral Safety Switch: This is the primary safety switch. It's located on the transmission and prevents the starter from engaging unless the transmission is in Park (or Neutral, depending on the transmission type).

* Clutch Safety Switch (if equipped): Manual transmission Sierras have a clutch safety switch. This switch is usually located on the clutch pedal assembly and prevents starting unless the clutch pedal is fully depressed.

* Ignition Switch: This is the main control for the entire starting system. It's part of the ignition lock cylinder.

Therefore, there's no single component labeled "starter safety switch." Troubleshooting starting problems requires checking the functionality of the neutral safety switch (most likely culprit), the clutch safety switch (if applicable), and the ignition switch itself. A wiring issue in any of the circuits connecting these components to the starter motor could also cause starting problems.