TCC Regulator Sleeve 4L30E
2000 & Later, PWM style
Reinforcement ribs added for sleeve stability.
Made of wear-resistant aluminum alloy material.
Drop-in replacement with no machining required.
Symptoms:
Code 1870
TCC slip
Cause:
The OE sleeve warps due to large slots, causing the valve to bind up, or leakage occurs due to sleeve wear, resulting in loss of any pressure.
Correction:
Replace the OE sleeve with the Sonnax sleeve, which provides added stability and better wear resistance.