I drove a used [ approx. 8,500 miles ] CTS-v with 6L90 automatic trans on Saturday morning. A relatively short drive – only 3 or 4 miles. Impressions below, but first a couple of questions:
1 – My shoe hung up between the trans tunnel and the brake pedal each time I made the transition between brake and accelerator. My shoes [ 13W ] are 4.5” wide. I have not had anything like this happen for many, many years.
Anyone else encounter this sort of issue? Did the substitution of the V8 & 6L90 trans require widening the trans tunnel?
2 – I am familiar with the 6Lxx series trans, having had a 6L80 in a 2007 Corvette & a 6L80 in a Pontiac G8 GT. My experience has been that [ when working as designed ] this is a paragon of smooth, crisp shifting – up and down. The 6L90 trans in this CTS-v worked well approx. 75% of my shifts. I drove 90% of the test in Sport “M”, as I typically drive. Most shifts were fine – but a few were rather jerky, with no pattern I could discern.
Anyone else have issues with [ occasional ? ] problematic shifting in the 6L90? I did a search, but saw nothing.
Thanks in advance for any responses.
Impressions – certainly nothing really new, for those who have driven one:
Though the drive was brief & included no speeds above 60 \ 65 MPH or so [ no highway – just gathering initial impressions here ] I was quite impressed with the acceleration & ride. The Eaton supercharger’s whine is reasonably well muted.
As many have said: The wealth of TQ at any RPM provides very satisfying acceleration in any gear at any speed – with a feeling of effortlessness.
The ride was quite pleasant, given the capabilities of the car & the tires – and the approx. 4,300 pounds of weight being controlled. Kudos to mag-ride.
I did not stress the car in braking or handling, but it felt quite competent & reassuring in normal driving.
I believe the 0-60 & quarter mile times I have seen reported. The acceleration in the 5 – 60 \ 65 MPH range, using moderate RPM but wide throttle openings was exhilarating fun.
I do hope this car survives.
Just my 0.02 gallons worth . . .
- Ray
1 – My shoe hung up between the trans tunnel and the brake pedal each time I made the transition between brake and accelerator. My shoes [ 13W ] are 4.5” wide. I have not had anything like this happen for many, many years.
Anyone else encounter this sort of issue? Did the substitution of the V8 & 6L90 trans require widening the trans tunnel?
2 – I am familiar with the 6Lxx series trans, having had a 6L80 in a 2007 Corvette & a 6L80 in a Pontiac G8 GT. My experience has been that [ when working as designed ] this is a paragon of smooth, crisp shifting – up and down. The 6L90 trans in this CTS-v worked well approx. 75% of my shifts. I drove 90% of the test in Sport “M”, as I typically drive. Most shifts were fine – but a few were rather jerky, with no pattern I could discern.
Anyone else have issues with [ occasional ? ] problematic shifting in the 6L90? I did a search, but saw nothing.
Thanks in advance for any responses.
Impressions – certainly nothing really new, for those who have driven one:
Though the drive was brief & included no speeds above 60 \ 65 MPH or so [ no highway – just gathering initial impressions here ] I was quite impressed with the acceleration & ride. The Eaton supercharger’s whine is reasonably well muted.
As many have said: The wealth of TQ at any RPM provides very satisfying acceleration in any gear at any speed – with a feeling of effortlessness.
The ride was quite pleasant, given the capabilities of the car & the tires – and the approx. 4,300 pounds of weight being controlled. Kudos to mag-ride.
I did not stress the car in braking or handling, but it felt quite competent & reassuring in normal driving.
I believe the 0-60 & quarter mile times I have seen reported. The acceleration in the 5 – 60 \ 65 MPH range, using moderate RPM but wide throttle openings was exhilarating fun.
I do hope this car survives.
Just my 0.02 gallons worth . . .
- Ray
