Tool Required VB-FIX Required

Printpartsummary
Symptoms:
  • Default mode
  • No Drive when hot
  • Pressure regulation codes
  • Pressure sensor reading low
Cause:

Pressure regulator and plunger valves and bores show significant wear.

Correction:

Sonnax has designed an oversized valve that restores OE normal line pressure and shift concerns.

Tool Required VB-FIX Required

AL-4, DPO

Oversized Pressure Regulator Valve Repair Kit

Part No.

120940-01K

Oversized Pressure Regulator Valve Repair Kit
  • 120940-01k_combo

  • Oversized Pressure Regulator Valve Repair Kit

Small_120940-01k_combo Small_120940-01k

AL-4, DPO

Oversized Pressure Regulator Valve Repair Kit

Part No. 120940-01K

  • Pressure Regulator Valve
  • Plunger Valve
  • Pressure Regulator Spring

Complaint:

  • Default mode
  • No Drive when hot
  • Pressure regulation codes
  • Pressure sensor reading low

Cause:

Pressure regulator and plunger valves and bores show significant wear.


Correction:

Sonnax has designed an oversized valve that restores OE normal line pressure and shift concerns.

Excessive OE plunger valve and bore wear results in high line pressure conditions. Excessive wear of the OE pressure regulator valve and bore may cause low, high or unstable line pressure issues. When installed, the Sonnax pressure regulator valve repair kit, 120940-01K, restores correct pressure regulator and plunger valve operation to provide appropriate line pressure for all operating conditions.

  • Salvages otherwise scrap DPO/AL4 valve bodies for reuse.
  • Restores nominal OE line pressure and eliminates related shift problems.
  • Hard anodized aluminum valves resist wear

Required Tools

You need this if...

Vacuum tests at the ports indicated (A, B, C & D) do not hold 18" or if a Wet Air Test at the same locations result in leaking at the corresponding ports.

  • Test Locations
  • Test Locations

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Contact a Sonnax Distributor to purchase this part.