Tech Resources Article GM Vacuum Test Guides Vacuum Testing
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June 04, 2024
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GM 9T45, 9T50, 9T60, 9T65 Vacuum Test Guide

Vacuum testing is an efficient way to identify the root cause of transmission problems and evaluate the effectiveness of repairs. Frequent, proper vacuum testing can put money in the bank, improve turnaround time in your bays, and prevent costly comebacks.

See how easy it is to master vacuum testing and work with confidence knowing your rebuild is done right the first time.


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Related Parts

Required

Recommended

9T45, 9T50, 9T60, 9T65 O-Ringed End Plug Kit 184740-03K

9T45, 9T50, 9T60, 9T65

O-Ringed End Plug Kit 184740-03K

Fits both ETRS and non-ETRS valve bodies. Port configurations may change due to variations of casting channels.

    Helps cure:
  • Harsh shifts
  • Burnt clutches
  • Pressure loss
  • Soft shifts
  • Flare shifts

Required

Recommended

9T45, 9T50, 9T60, 9T65 Pressure Regulator Boost Valve Kit 184740-02K

9T45, 9T50, 9T60, 9T65

Pressure Regulator Boost Valve Kit 184740-02K

    Helps cure:
  • Erratic line pressure
  • Burnt clutches
  • Poor shift quality
  • Low converter & lube flow
  • Overheating

Required

Recommended

9T45, 9T50, 9T60, 9T65 Solenoid Stabilization Clip Insert 184740-04K

9T45, 9T50, 9T60, 9T65

Solenoid Stabilization Clip Insert 184740-04K

    Helps cure:
  • Loss of shift solenoid control pressure
  • Poor shift quality
  • Various shift concerns
  • Burnt clutches
  • Damaged valve body casting

Required

Recommended

9T45, 9T50, 9T60, 9T65 ETRS Mode 2 Boost Valve Kit 184740-06K

9T45, 9T50, 9T60, 9T65

ETRS Mode 2 Boost Valve Kit 184740-06K

    Helps cure:
  • Park release issues

Required

Recommended

9T45, 9T50, 9T60, 9T65 Signal Damper Piston Kit 184740-01K

9T45, 9T50, 9T60, 9T65

Signal Damper Piston Kit 184740-01K

    Helps cure:
  • Burnt clutches
  • Soft shifts
  • Shift concerns associated with circuit pressure loss

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