[TrudyMain]

I have a 06 Pontiac G6 3.5 with 241329 miles on it. When I start it up feels like it is missing or has a misfire. Today on my way home from work all of sudden it wouldn't shift into overdrive. Not the first time this has happen. So I pulled over and turn the car. After 5 minutes I turn the car back on the missing is still there but as I go to accelerate it goes into 1st and 2nd and 3rd. Shifts fine rpms are normal. Coming out of 3rd and into overdrive rpms drop to about 1k. It will pick up speed but you can tell the transmission wont let it go into overdrive. So i get home put the car in park. And put it in reverse then neutral then drive all shift fine while parked. I'm in drive while still park. And put it into the 3rd and it won't shift. So I put it back in park. And pull the gear shift into L and shift it into 3 and it does nothing. But if I put it in natural from Drive it will go.

 

[davez26]

Shifting from 3rd to OD, should result in an rpm drop, that is the normal progression as the gearbox shifts through.
But reading through all of it, this sticks out: 'I'm in drive while still park.', which makes me wonder if the shift cable is broke or partially detached resulting in you being in a different gear than you have selected. Gear cable issues are not unknown on the G6.

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[INDY86]

Shifting from 3rd to OD, should result in an rpm drop, that is the normal progression as the gearbox shifts through.
But reading through all of it, this sticks out: 'I'm in drive while still park.', which makes me wonder if the shift cable is broke or partially detached resulting in you being in a different gear than you have selected. Gear cable issues are not unknown on the G6.

Sent from my XT1635-01 using Tapatalk

After putting new brake pads on my daughter's G 6 GT I noticed while driving it back to her home the shift from 3rd to overdrive was not smooth. It was sort of searching between the two shift points like it was uncertain as to shift or not . I know this is not uncommon with a transmission that has overdrive but it seems more pronounced than usual . I have a G 6 as well and it is much less noticeable than hers is . This just started to happen . Car has been sitting at home and not driven much due to her working at home due to the Covid19 outbreak . If anyone has had a similar problem or any thoughts on this please reply.