IF YOU CONFIRM: When driving an applied vehicle a judder (shudder or multiple bumps or vibrations) happens during one of the following conditions: * during light acceleration below 20 mph with less than 20% throttle opening Or * during constant throttle application at constant speed between 50 ? 60 mph ACTION: 1. Refer to step 20 and TABLE A on page 8 in the SERVICE PROCEDURE to confirm this bulletin applies to the vehicle you are working on. 2. If this bulletin applies, reprogram the EV/HEV (Hybrid Power Control Module) and the TCM (Transmission Control Module). Please see this bulletin for further details.
