Cruise Control Description and Operation: Notes

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Notes
WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.

Cruise control is a speed control system that maintains a desired vehicle speed under normal driving conditions at vehicle speeds above 40 km/h (25 mph). Steep grades may cause variations in the selected vehicle speeds.

The following are the main components of the cruise control system:

  • The cruise control module
  • The clutch start switch, if equipped with a manual transmission
  • The On/Off switch
  • The powertrain control module (PCM)
  • The Resume/Accel. Switch
  • The Set/Coast Switch
  • The stop lamp switch
  • The torque converter clutch (TCC) brake switch
  • The vehicle speed sensor

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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.