Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2019EXPRESS 2500 BASE, VAN CARGO EXTENDED, 6.0L ENG VIN GREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 13 (ENGINE CONTROLS AND FUEL - 2.8L (LWN) DIESEL - DIAGNOSTIC INFORMATION AND PROCEDURES (2 OF 3))DIAGNOSTIC INFORMATION AND PROCEDURESDTC P200CCIRCUIT/SYSTEM TESTING
2019 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN G
Circuit/System Testing
2019 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN GSECTION Circuit/System Testing
WARNING: This page is about a different variant/trim than selected.
- Verify a condition does not exist with the component: Exhaust System & Turbocharger
- Cracked
- Internal component rattle
- Leaking - Refer to: Exhaust Leakage
- Loose Clamps
- Missing components
- Restrictions - Refer to: Restricted Exhaust
- Visible Damage
- If a condition exists
Repair or replace as necessary.
- Go to next step: If no condition exists
- Verify a condition does not exist with the component: Induction System
- Intake Air Duct - Collapsed
- Intake Air Duct Seal - Leaking
- Loose Clamps
- Missing components
- Visible Damage
- If a condition exists
Repair or replace as necessary.
- Go to next step: If no condition exists
- Verify the condition does not exist: Oil consumption - Refer to: Oil Consumption Diagnosis
- If a condition exists
Repair or replace as necessary.
- Go to next step: If no condition exists
- If a condition exists
- Perform the following procedure/test: DPF Service Regeneration - Refer to: Diesel Particulate Filter (DPF) Service Regeneration
- If the procedure was not successful
Replace the component: Exhaust Particulate Filter
- Go to next step: If the procedure was successful
- If the procedure was not successful
- All OK.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.