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 MANUALSCHEVROLET2025SILVERADO 2500 HD HIGH COUNTRY, 6.6L ENG VIN YLABOR TIMESOTHER VARIANTENGINE PERFORMANCEFUEL DELIVERY SYSTEMFUEL SYSTEM CONTAMINATION SERVICECLEAN
2025 Chevrolet Silverado 2500 HD High Country, 6.6L Eng VIN Y
Fuel System Contamination Service: Clean
2025 Chevrolet Silverado 2500 HD High Country, 6.6L Eng VIN YSECTION Clean
WARNING: This page is about the Silverado 2500 HD Custom, 4D Pickup Crew Cab, 6.6L Eng VIN 7, 4WD, which is a different variant/trim than selected.
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 | |
RENDER: 1.0x
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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.