99 GC, remanufactured transmission installed 6K miles ago, 3.8 engine, 240K total miles.
Daughter's van has been well maintaned and is in overall good condition.
But, since the tansmission installation, she has had new problems which seem to be related directly to the transmission.
1. While accelerating normally from a stop there is a jerking in the powertrain. She described the jerking as intervals of jerks, one after another. This has happened three times, two of them were rough enough to shake the entire vehicle so that everyone (4 persons once, 7 next) was well aware of a problem. The third one (most recent, driver alone) was less violent but very clearly the same sort as the other two.
2. From a parked position and trying to go into reverse, the transmission doesn't seem to engage making the driver think either something is behind the van and preventing movement or the shift selector wasn't properly engaged.
3. On open road while ascending a hill, downshift seems to over react and results in excessive rpm (4000+) with reducing mph. I asked if the incline was steep enough that the van should not have been able to accelerate going up. She said it wasn't that steep and that the situation was very definitely abnormal.
My daughter is responsible for most of these miles and is more familiar with automobiles than the average person. I will have the van sometime tomorrow and may know more after a test drive.
Your help is sincerely desired and will be greatly appreciated.
Thanks, Ed B
Daughter's van has been well maintaned and is in overall good condition.
But, since the tansmission installation, she has had new problems which seem to be related directly to the transmission.
1. While accelerating normally from a stop there is a jerking in the powertrain. She described the jerking as intervals of jerks, one after another. This has happened three times, two of them were rough enough to shake the entire vehicle so that everyone (4 persons once, 7 next) was well aware of a problem. The third one (most recent, driver alone) was less violent but very clearly the same sort as the other two.
2. From a parked position and trying to go into reverse, the transmission doesn't seem to engage making the driver think either something is behind the van and preventing movement or the shift selector wasn't properly engaged.
3. On open road while ascending a hill, downshift seems to over react and results in excessive rpm (4000+) with reducing mph. I asked if the incline was steep enough that the van should not have been able to accelerate going up. She said it wasn't that steep and that the situation was very definitely abnormal.
My daughter is responsible for most of these miles and is more familiar with automobiles than the average person. I will have the van sometime tomorrow and may know more after a test drive.
Your help is sincerely desired and will be greatly appreciated.
Thanks, Ed B