Hello everyone, We have a 1998 buick century with a 4t60e transmission that has a harsh torque converter engagement. when the converter is commanded on you can feel the engagement and it feels like a transmission shift, noticeable in 3rd and 4th gears. We are leaning toward a tcc pwm solenoid that is weak or restricted, but unable to confirm theory. the transmission does appear to have been flushed recently as the vehicle has 90,000 miles and fluid appears new and is not burnt. I hope someone else out there has run into something similar and may have some advice. thank you

Jesse Defenbaugh
Shop Foreman/Technician
Becker Tire Of Great Bend
Great Bend, Kansas, USA