TCC Regulator Sleeve 4L30E

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.