The car is already at a garage, but the mechanic is apparently fairly booked, and I wonder if anybody wants to guess at how bad this is?
The automatic transmission on my friend’s 2008 Pontiac G6 GT Convertible went out on him at work about a week ago. Transmission fluid is full…actually too full. I managed to drive it to my home using the Sportronic feature (push forward for the next gear, pull back to downshift). I’m his occasional car guy, but know nothing about automatic transmissions. It didn’t drive perfectly. First gear didn’t seem to do anything, and shifting from 1st to 2nd didn’t seem to work reliably. I would be at a stoplight, 1st wouldn’t respond, then I’d shift to 2nd and try again with still no motion, but glance at the LED gear selection on the dash and realize it’s still in 1st. A second try to 2nd got the car moving.
It sits at my house for roughly 36 hours and I want to take it for a second test drive to solidify my thinking. My code reader doesn’t find anything but a P0420, which is unrelated, but a local garage offers to check it himself for free, so that’s one stop. He doesn’t want the actual transmission job. To my surprise the Sportronic works perfectly now, even in 1st. All gears and all shifting work as expected, and I’m enjoying the drive. Automatic still doesn’t work. The garage can’t find any additional codes, so the problem appears to be purely mechanical. On the drive home, after no more than 30 minutes of running time, the transmission goes out completely. Only reverse still works. I use reverse to move it out of the way, but Sportronic is dead. I can shift to 2nd and see this on the dash, but the car won’t move. It downshifts itself back to 1st over time (normal) and I can see this on the dash and hear it, but still no motion. I walk home and we get a tow truck that evening. After sitting for a few hours the transmission is still dead.
My best guess is the transmission shifts normally, but doesn’t actually “catch” to put the car in motion. Not sure about the Sportronic shifting issue on the first drive.
Might anybody want to guess what this is, along with the co$t? Thanks.