2000 Grand Prix GTP with 145K. When engine is cold tranny shifts fine into all gears, but after 3-4 minutes of the engine running the tranny won't operate in any of the gears including reverse. After almost a minute of cold start you'd hear a whining noise out of the tranny (Listen to the video), at that point car still moves into gears, but shortly after that that's it, engine doesn't even get to be at a normal operating temp and the trans just won't operate. Then you leave the car sit for about 15-20 minutes, I restart it and again it shifts fine for a minute or two and that's it. Oil pump is bad? Torque? Or both ! Here's a video, notice noise starting at 1:15 into the video and it becomes louder. I'd appreciate any and all opinions and advice. Thanks guys. IMG 3003 - YouTube
