Hi everybody. I’m a long time GP owner. I’m on my 4th GP since 1993. I now have a 2008 GXP with 48,000 miles. I'm having this very inconsistent problem with the tranny. I had it into a dealer for a day and of course it never happened for them, so they say they can’t fix what they can’t find.
When the car is stopped and in Drive, I give it gas and there's a moment's hesitation as the engine revs up but the car doesn’t; move, then suddenly the tranny bangs into gear and the car takes off. Sometimes it’s a split second and a mild bang, sometimes it’s more like a full second and the bang is pretty bad.
There’s no rhyme or reason that I can tell. Sometimes it happens when the car is cold, and other times it’s hot. Sometimes it happens several times in a day, and then it may disappear for a month. It only happens when moving from a full stop. It never happens in reverse, and it never happens when the car upshifts to any other gear.
This has been going on for several months
The powertrain has a 5 year 100,000 mile warranty, and 5 years will be up in January. What I’m afraid of is that the tranny will finally fail after the warranty period is up.
Any helpful suggestions?