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HOMESERVICE MANUALSBUICK2013REGAL TURBO PREMIUM, STANDARD TRANSREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 119 (AUTOMATIC TRANSMISSION - 6T45 - REPAIR INSTRUCTIONS - OFF VEHICLE)REPAIR INSTRUCTIONS - OFF VEHICLE2-6 CLUTCH PISTON INSTALLATION (6T40/45)
2013 Buick Regal Turbo Premium, Standard Trans

2-6 Clutch Piston Installation (6T40/45)

2013 Buick Regal Turbo Premium, Standard TransSECTION 2-6 Clutch Piston Installation (6T40/45)
WARNING: This page is about a different car, the 2011 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: 2-6 Clutch Piston Assembly
GM1891330Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 2-6 Clutch Piston Assembly
Tip: 
  • Position the 2-6 piston air bleed and large slot toward the top of the case.
  • DT-47796:  seal protector prevents the piston seal lip from damage during installation. Apply a thin coat of ATF to the I.D. of the DT-47796:  seal protector to ease installation of the piston.

Special Tool: 
DT-47796:  Seal Protector
For equivalent regional tools, refer to Special Tools .
2 2-6 Clutch Spring
3 2-6 Clutch Spring Retainer
CAUTION: Regulate the air pressure to 40 psi maximum. High pressure could cause the piston to over travel and damage the piston seals.

Tip: 
  • Place the retainer on the 2-6 clutch spring and align the retainer opening with the largest gap in the case splines toward the bottom of the case. The retainer opening should be supported by a spline tooth of the case.
  • Apply shop air to the clutch fluid feed hole in the case to verify proper piston operation.

Special Tools

  • DT-47797:  Spring Installer
  • DT-48056:  Spring Compressor Bridge

For equivalent regional tools, refer to Special Tools .
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.