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 MANUALSCHEVROLET2006EXPRESS 2500 V8-6.6L DSL TURBO VIN 2REPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER BLOCK ASSEMBLYPISTON RING, ENGINE
2006 Chevrolet Express 2500 V8-6.6L DSL Turbo VIN 2
Piston Ring, Engine
2006 Chevrolet Express 2500 V8-6.6L DSL Turbo VIN 2SECTION Piston Ring, Engine
Piston Ring End Gap-First Compression Ring - Service Limit 1.37 mm (0.0539 inch)
Piston Ring End Gap-First Compression Ring - Production Value 0.3 - 0.45 mm (0.0118 - 0.0177 inch)
Piston Ring End Gap-Second Compression Ring - Service Limit 1.35 mm (0.0531 inch)
Piston Ring End Gap-Second Compression Ring - Production Value 0.50 - 0.65 mm (0.0197 - 0.0256 inch)
Piston Ring End Gap-Oil Control Ring - Service Limit 1.20 mm (0.0472 inch)
Piston Ring End Gap-Oil Control Ring - Production Value 0.15 - 0.35 mm (0.0059 - 0.0138 inch)
Piston Ring to Groove Clearance-First Compression Ring - Service Limit 0.26 mm (0.0102 inch)
Piston Ring to Groove Clearance-First Compression Ring - Production Value 0.08 - 0.17 mm (0.0030 - 0.0067 inch)
Piston Ring to Groove Clearance-Second Compression Ring - Service Limit 0.10 mm (0.0039 inch)
Piston Ring to Groove Clearance-Second Compression Ring - Production Value 0.01 - 0.03 mm (0.0004 - 0.0012 inch)
Piston Ring to Groove Clearance-Oil Control Ring - Service Limit 0.12 mm (0.0047 inch)
Piston Ring to Groove Clearance-Oil Control Ring - Production Value 0.01 - 0.03 mm (0.0004 - 0.0012 inch)
Piston Ring End Gap-First Compression Ring - Production Value 0.3 - 0.45 mm (0.0118 - 0.0177 inch)
Piston Ring End Gap-Second Compression Ring - Service Limit 1.35 mm (0.0531 inch)
Piston Ring End Gap-Second Compression Ring - Production Value 0.50 - 0.65 mm (0.0197 - 0.0256 inch)
Piston Ring End Gap-Oil Control Ring - Service Limit 1.20 mm (0.0472 inch)
Piston Ring End Gap-Oil Control Ring - Production Value 0.15 - 0.35 mm (0.0059 - 0.0138 inch)
Piston Ring to Groove Clearance-First Compression Ring - Service Limit 0.26 mm (0.0102 inch)
Piston Ring to Groove Clearance-First Compression Ring - Production Value 0.08 - 0.17 mm (0.0030 - 0.0067 inch)
Piston Ring to Groove Clearance-Second Compression Ring - Service Limit 0.10 mm (0.0039 inch)
Piston Ring to Groove Clearance-Second Compression Ring - Production Value 0.01 - 0.03 mm (0.0004 - 0.0012 inch)
Piston Ring to Groove Clearance-Oil Control Ring - Service Limit 0.12 mm (0.0047 inch)
Piston Ring to Groove Clearance-Oil Control Ring - Production Value 0.01 - 0.03 mm (0.0004 - 0.0012 inch)
RENDER: 1.0x
NO RELATED
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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.