High idle switch

  • Monitors engine temperature during the high idle warm-up period
  • The high idle icon appears in rearview mirror
  • When engine is warm enough, idle returns to normal and icon in your mirror alerts you

Requires 2500 or 3500 models, Vortec 6.0L V8 SFI FlexFuel engine or gaseous 6.0L V8 SFI engine. Included with Ambulance Package. Not available with 1500 models.