September 21, 2005
18 Troubleshooting Tips for 4R44E & 5R55E Transmissions
Bob Warnke
The end plugs at the kick downshift control, manual low, and throttle downshift control valves become loose. This allows solenoid feed oil to exhaust and drop below 40-45 psi, which prevents the shift valves from stroking fully. Sonnax O-ringed end plug and checkball kit 37947-13K contains O-ringed end plugs for these three locations, which positively seal the circuit to prevent oil loss.
September 21, 2005
Bob Warnke
September 30, 2005
Gregg Nader