Operation CHARM: Car repair manuals for everyone.

Upshift & Torque Converter Clutch (TCC) Apply

Torque Converter Clutch (TCC) will not engage if engine coolant is not at minimum operating temperature of approximately 130°F.

With gear selector in Overdrive, accelerate using a steady increasing throttle pressure. Not speed at which shift point occurs for 2nd, 3rd, Overdrive gears and TCC apply. TCC apply should occur while in 3rd or overdrive gear.