Diagnostic Aids

If TCC is mechanically stuck on, vehicle speed is zero MPH, brakes are applied and D2 is selected, TCC fluid will mechanically apply TCC causing an engine stall.

Fig 1: Code 39 Schematic ("C", "G", "K" & "P" Series W/ 4L80-E Trans.) TCC Stuck Off

Fig 2: Code 39 Flow Chart ("C", "G", "K" & "P" Series W/ 4L80-E Trans.) TCC Stuck Off