G 3500 1 Ton Van V8-454 7.4L VIN N TBI (1995)
Idle Speed: Specifications
Base Idle Speed
Automatic Transmission (in drive) ............................................................................................................................................................. 625 RPM (+/- 25)
Manual Transmission (in neutral) ............................................................................................................................................................... 625 RPM (+/- 25)
Engine should be at operating temperature 92°C to 104° (196°F to 222°F) and in "Closed Loop." If the engine has less than 500 miles or is checked
above 1500 feet, the idle RPM with a seated IAC valve should be lower than values shown.
