Conditions for Running
WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, and 2002 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.
Non Scan Tool Service Bay Test
- The barometric pressure is more than 75 kPa.
- The fuel level is between 1/4 and 3/4.
- The battery voltage is between 10-18 volts.
- The test will initiate only after a cold start. The control module considers the engine to be cold if the following conditions are met:
- The Engine Coolant Temperature (ECT) is between 39-86°F (3.8-30.0°C).
- The Intake Air Temperature (IAT) is between 39-86°F (3.8-30.0°C).
- The difference between the ECT and the IAT is less than 14°F (8°C).
Scan Tool Service Bay Test
- The Barometric (BARO) pressure is more than 75 kPa.
- The ECT is less than 158°F (70°C).
- The fuel level is between 1/4 and 3/4.
- The battery voltage is between 10-18 volts.