G 1500 1/2 Ton Van V8-305 5.0L VIN H TBI (1995)
Idle Speed: Specifications
Controlled Idle Speed
Automatic Transmission (in drive) ............................................................................................................................................................. 650 RPM (+/- 25)
Manual Transmission (in neutral) ............................................................................................................................................................... 550 RPM (+/- 25)
Engine should be at operating temperature 92°C to 104° (196°F to 222°F) and in "Closed Loop." IAC valve counts should be 5 to 30. Add two counts
for engines with less than 500 miles. Add two counts for every 1000 ft. above sea level.