Lines declined to give a failure rate for the transmission. The settlement applies to all owners of '02 to '05 Vues and '03 to '04 Ions with the VTi transmission. The percentage of the settlement each person receives will depend on the number of miles on the vehicle when the transmission failed and whether the current owner bought the vehicle new or used. Assuming the settlement is approved, all owners of those vehicles will receive a claims form for expenses related to the transmission failure, but only if the vehicle had fewer than , miles on it before the failure and the transmission failed within eight years of the date the vehicle was manufactured.
Any slipping during this 2. There staring us in the face is the bi-directional ratio-control motor RCM. This is an electrical device that is more familiarly known as a stepper motor. It consists of five terminals and two coils that electrically rotate a threaded shaft to which a pintle is attached.
The linear movement of the pintle moves this valve in and out of its bore to accurately feed fluid into the primary-pulley piston drive pulley which controls the various drive ratios see Figure 6. At the opposite end of the variable-ratio control-valve lever is the drive-pulley follower see f igures 6 and 7.
This spring-loaded follower rides on the movable drive-pulley half and reacts to the movement of the drive pulley as it changes ratios.
With one end of the lever being in the ratio-control motor and the other end being in the drive-pulley follower, the follower acts as a movable pivot point for the lever.
In doing so, it becomes a mechanical sensor influencing the variable-ratio control valve tailoring the feed fluid into the drive-pulley piston. To perform a dynamic test of the RCM stepper motor , supply battery voltage to the center terminal marked number 3 in Figure 8.
Alternate a ground repeatedly between terminals 1 and 4 and watch the pintle move away from the coil. For every 10 pulses the pintle will move about 0. The RCM has a total nominal travel of Keeping a battery supply to the center terminal marked 3, alternate a ground repeatedly between terminals 2 and 5 and watch the pintle move in toward the coil. Do not leave current flowing through the stepper for great lengths of time or damage may occur In other words, do not hold the ground on a terminal for more than a second.
When the TCM performs this alternating ground task, it is referred to as steps or counts and it sends a count once every 25 milliseconds 40 counts per second. To perform a resistance check of the RCM, place the positive lead to the terminal marked 3 and with the negative lead make individual contact with terminals 1, 2, 4 and 5. Each should have about 25 ohms of resistance.
But on vehicles without antilock brakes, after a panic stop the vehicle will have remained in the ratio it was in before the stop, and this would be noticed on takeoff. A transducer monitoring drive-pulley pressure would be an additional input that the TCM could use to overcome this little glitch.
The speed sensors themselves also have had issues. Bulletin number speaks of speedometer-fluctuation concerns. The fluctuation may occur at highway speeds, with the vehicle experiencing a hesitation condition. The fluctuation also may occur during a stop, in Park or Neutral, or even during takeoff in Drive. The cause of this is a conductive foam emulsion that accumulates on the inside of the top pan.
This conductive foam drips down onto the module leadframe and could short the circuitry for the speed sensors, resulting in an erratic speedometer. Debbie Frakes, a GM spokeswoman at the time, said they were worried about a small percentage of vehicles:. But as time passed it became clear that the problem was not limited to just a few of the transmissions. On CarComplaints. It had , miles, drove car very little, while making a left turn into my subdivision, transmission slipped out of gear as I was making left turn I applied the gas and transmission changed gears reved up several rpms car became difficult to steer and I lost control of my car and hit the concrete wall!
The average reported mileage at failure was around , miles, but even those lucky enough to have their transmissions replaced under the warranty's terms said it didn't matter:. Our transmission has failed each time with no power at all. We are on our 3rd tranny. I bought it used with 66,km 41, miles. The first original tranny went at 75, km 46, miles under manufacture's warranty, thank god.
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