Q: Q: Transmission not shifting properly

asked by on

I have a 2007 Chevy Tahoe. We were just currently driving home on the frwy in traffic, going about 25 mph. The RPM's went high at low speeds. The oil gage started to climb and transmission started to slip and be less responsive. It felt like it lost power. Heard a whistling or air like noise when going 30 mph or higher. Checked the transmission fluid when we got home, seems to be fine. What can you suggest???

My car has 115000 miles.
My car has an automatic transmission.

What you are describing is often a sign of low transmission fluid or a faulty transmission control solenoid. As you know, automatic transmissions use pressurized hydraulic fluid to change gears. Every time a gear change is required, the car’s computer activates a transmission solenoid, which directs transmission fluid into the valve body to engage the correct gear. When this is faulty or not working properly, this can cause a delay in gear shifting or in some cases cause the car to not shift at all. This type of problem is amplified any time the transmission is low on fluid creating a drop in hydraulic pressure. I would recommend having a professional from YourMechanic come to your location to diagnose and inspect your vehicle.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Q: Transmission not shifting properly

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: My front brakes are sticking but i cant tell if it is the caliper or the master cylinder

Most of the time, this is caused by the caliper sticking, or the slide pins freezing up. There is a return valve in the master cylinder that could be plugged partially, but that is not common. Is is also...

Q: I am having trouble starting my 2007 Dodge Charger and it does not have good acceleration

Hello. There are a lot of things that can cause this on your vehicle. I would usually start by scanning the computer for any codes. If there are codes set it can help to find the issue. If there are...

Q: Car losing oil, excessive transfer case fluid

Hello. These two systems are separate so they would not be related. If the transfer case is overfilled then it was either filled too high when it was last serviced or water got into it if you have driven through...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...