O/S 3-4 SHIFT VALVE KIT (4L60/65E)
# 37799KX

Oversized 3-4 Shift Valve Kit

O/S 3-4 SHIFT VALVE KIT (4L60/65E)

Tool Required


Symptoms:

  • 2nd Gear starts
  • Low AFL pressure
  • 3rd Clutch failure
  • 3-4 Concerns

Cause:
Wear at the shift valve spools and bore lands allows loss of critical hydraulic pressure. Typically wear is most severe at the signal A spool/land.

Correction:
Recondition the bore and install Sonnax oversized 3-4 shift valve kit.


In GM 4L60-E, 4L65-E abd 4L70-E units, wear at the shift valve spools and bore lands causes loss of critical hydraulic pressure which, depending on the wear location and severity, can result in shift timing/feel complaints, 2nd Gear starts, 3rd clutch failure, 3-4 shift complaints and loss of AFL pressure. Reconditioning the bore and installing this Sonnax oversized 3-4 shift valve kit restores hydraulic integrity.

  • Hardcoat anodized aluminum valve combats premature wear
  • Sonnax spring maintains OE operating pressures and timing

Contents:

    Valve
  • Spring

37799KX Instruction Sheet

Type of Product: Sundry Parts
Qty Needed:
Years:
Alternative #:
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