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.
2020 Chevrolet Silverado 2500 HD Custom, 4D Pickup Crew Cab, 4WDFACTORY OEM SERVICE PROCEDURE
Fuel System Contamination Service: Clean
FUEL INJECTION - GAS, PORT TYPE
| Applies To | Note | Standard Hours | Warranty Hours | Skill Level |
|---|---|---|---|---|
| Gas, Alcohol Contamination | 0.5 | B | ||
| Gas, Particulate Contamination | Includes: R&I Fuel Tank. Includes: R&I Fuel Pump Module Assembly. Includes: R&I Intake Manifold. Includes: R&I Fuel Rails. Includes: R&I Fuel Injectors. | 7.1 | B | |
| Gas, Water Contamination | Includes: R&I Fuel Tank. Includes: R&I Fuel Pump Module Assembly. Includes: R&I Intake Manifold. Includes: R&I Fuel Rails. Includes: R&I Fuel Injectors. | 7.1 | B | |
| Combination Procedure: FUEL TANK: Drain & Refill: | ||||
| Gas | 0.2 | C | ||
| Combination Procedure: THROTTLE BODY ASSEMBLY: Reset: | ||||
| Gas, Throttle Body Idle Air Flow Compensation Reset | Includes: Additional time for use of scan tool to perform this procedure. | 0.2 | B | |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.