Transmission Position Sensor/Switch: Testing and Inspection

1993 Cadillac Fleetwood Brougham V8-350 5.7LSECTION Testing and Inspection
A scan tool should display "P-N-," when in park or neutral and "-R-DL," when in drive or reverse. Refer to Chart C-1A Park/Neutral Position (PNP) Switch Diagnosis under Diagnostic Charts for additional information. Chart C-1A Park/Neutral Switch Diagnosis
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.