Over 8500 GVW, Controlled Idle Speed / IAC Counts
Over 8500 GVW, Controlled Idle Speed / IAC Counts<0018>
| Idle Speed Note: Let engine idle until proper fuel control status is open loop. | IAC Counts Note: Add 2 counts for engines with less than 500 miles. Add 2 count for every 1000 ft above sea level. | |||
| Manual Transmission | Suburban Models Except a Single Catalytic Converter | Neutral | 650 | 5-30 |
| Suburban Models With a Single Catalytic Converter | Neutral | 600 | 5-30 | |
| Auto Transmission | Drive | 550 | 5-30 |