Circuit/System Testing

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.

Verify the following conditions do not exist:
- Q17 Fuel Injector - Incorrect connection/Leaking/Loose/Restricted
- Fuel - Contaminated/Dirty - Refer to: Contaminants-in-Fuel Diagnosis
- Fuel - Fill Level = Low
- Fuel Line(All) - Blocked/Incorrect connection/Kinked/Leaking/Loose/Restricted
- Fuel Pressure - Low - Refer to: Fuel System Diagnosis
- If a condition exists
  Repair or replace as necessary.
- Go to next step: If no conditions exist
Perform the following procedure/test: Engine Compression Test
- If the procedure/test does not pass
  Refer to: Symptoms - Engine Mechanical
- Go to next step: If the procedure/test passes
Test or replace the component: Q17 Fuel Injector