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HOMESERVICE MANUALSCHEVROLET2014EXPRESS 2500 BASE, VAN CARGO, 6.6L ENG VIN LREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 2 (ENGINE MECHANICAL - 6.6L (LGH) - SPECIFICATIONS)SPECIFICATIONSTHREAD REPAIR SPECIFICATIONSCYLINDER HEAD - REAR VIEW
2014 Chevrolet Express 2500 Base, Van Cargo, 6.6L Eng VIN L

Cylinder Head - Rear View

2014 Chevrolet Express 2500 Base, Van Cargo, 6.6L Eng VIN LSECTION Cylinder Head - Rear View
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2013 GMC Savana, 2013 GMC RV Cutaway, 2013 GMC Cutaway, 2013 Chevrolet RV Cutaway, and 2013 Chevrolet Express. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Cylinder Head (Rear View)
GM1491212Courtesy of GENERAL MOTORS COMPANY
Cylinder Head - Rear View

Service Hole Location Thread Size Drill Counterbore Tool Stop Collar Tap Driver Insert Drill Depth (Max) Tap Depth (Min)
mm (in) mm (in)
1 M 8 x 1.25 -206 -207 N/A -208 -209 -210 17 0.669 13 0.512
2 M 10 x 1.5 -211 -212 N/A -213 -214 -216 20 0.788 16 0.630
RENDER: 1.0x

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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.