Circuit/System Verification
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2018 GMC Yukon XL, 2018 GMC Yukon, 2018 Chevrolet Tahoe, 2018 Chevrolet Suburban, and 2018 Cadillac Escalade ESV. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Cold Start-Up=Required
- Engine - Idling
- Verify the scan tool parameter:Cylinder 1-8 Current Misfire Counter=Less than 1
- If 1 or greater
- Ignition - On / Vehicle - In Service Mode & Engine - Off
- Verify the following conditions do not exist:
- Fuel Pressure - Low/High - Refer to Fuel System Diagnosis .
- Fuel - Contaminated/Poor Quality - Refer to Alcohol/Contaminants-in-Fuel Diagnosis
- Damaged or worn component: - Fuel Injector - Refer to Fuel Injector Balance Test
- If a condition exists - Repair or replace as necessary
- Go to next step: If less than 1
- All OK.