trans brake.
thought i had a bad solenoid ,so i bought a new tci one it worked fine in garage , first t.t. . then on second t.t. it failed. it will work if you push in by hand. so i just footbraked it the rest of the day. next morning when i unloaded the car i tried it and it works. seams to be a heat issue , any idea's? it is a powerglide. thanks.