Once mode of driving is declared and rpm noted for each shift, others with the same engine can make comparisons before determining whether or not something is unusual. Engine/xmission computers are programmed for every driver so rpm shifts are different between extreme driving modes. Driving at leisure with fuel economy in mind or granny mode implies slow acceleration resulting in lower rpm shifts since the car is used for every day driving. Flooring the pedal implies revving as quickly as possible, resulting in higher rpm before shifting. Another factor affecting rpm shift points is the right foot - is the driver flooring it for stoplight racing, running fast to meet soccer/football/baseball school schedules, running fast to stay with the crowd or just driving in 'regular' mode without a car who's on your rear bumper and not concerned about getting anywhere on time? Since automatics are continually 'tuned' to every driver's foot, rpm shifts change all the time. In normal driving, what's observed rpm when shifts are made? Without some baseline info, anyone can speculate what's considered low, high or normal rpm for shifts in autos. Question is this, do these have a higher than normal shift points? Seems to shift at fairly high RPM, very smooth, just seems higher than normal. My daughter just got a 2008 VUE with the 2.4 engine. I should mention that up until the time when it started slipping I had never done any service whatsoever on the transmission or the engine and the car is at 84K miles when I did the service on the transmission about two months ago. What do you think the issue may be with slippage when it's cold? When I do this I don't have problems driving it. So I then tried to avoid slippage by letting the car warm up for about a minute until the rpm is below 1000, then I don't have problems slipping. I would have to stop the car, put it in park or turn it off, then put it in Drive again and then it would run fine. Now it does not slip except for certain conditions - I noticed that if I drive the car from a cold start (usually first thing in the morning), I get slippage with a harsh shift out of first gear. That's why I had the Trans fluid drained and the filter and gaskets replaced. It was slipping before I did the fluid change. If level is ok, you'd want to scan for codes. Add fluid until the fluid drains out the plug. Vehicle needs to be level, with engine running in Park. There's no dipstick - there is a oil level control plug on the torque converter side of the transmission. The transmission fluid has to be at 104 F to get the correct level. If the slipping started after the fluid change, the first thing I would check is for correct fluid level.
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