This is one of the most common causes of torque converter problems. This will in turn cause the transmission to overheat. If there isn’t enough it can’t do its job. Transmission fluid is the lifeblood of the transmission and the torque converter bolted to it. There are many different things that can cause your Trailblazer to have torque converter problems. It can tell you a lot about the health of your transmission in general.Ĭauses of Torque Converter Problems: Chevy Trailblazer Taking a look at the transmission fluid should be the first thing that you do. If your Trailblazer has bad transmission fluid, it can cause the torque converter to go bad. This fluid helps cool the converter and transfers energy. Like your automatic transmission, the torque converter is full of transmission fluid. The best way to describe the sound would be a whir sound if you have bad bearings in it and a clunking sound if it’s a bad turbine fin. This shudder feels like a manual transmission when you need to downshift.Ī bad torque converter will often make strange sounds. If the torque converter fails to unlock at lower speeds, it shudders. It won’t do this at lower speeds so your Trailblazer can take advantage of the torque multiplication that a torque converter provides. Torque converters use a lock up clutch to create a true 1:1 connection between the engine and the wheels. When this happens, your torque converter has a higher effective stall speed. This keeps your Trailblazer’s engine from turning at the right RPM for any given speed, which can really hurt fuel economy. If the torque converter has gone bad, then it’s no longer transferring power to your Trailblazer’s rear wheels in an efficient manner. This increases the fuel mileage achieved and brings an automatic transmissions efficiency more in line with a standard transmission. This eliminates operating inefficiency when it is at high speed (usually after about 45 miles an hour). A locking converter has clutches in it that lets the transmission make a physical connection with the engine. Nearly all modern automatic transmissions have a locking torque converter. More Info: Trailblazer Transmission Slipping Diagnosis If you suspect this is happening with your car, has your fuel mileage changed? This is often a sign that the transmission isn’t operating efficiently. When a torque converter is malfunctioning it can cause this stall speed to change and feel like the transmission is slipping. ![]() The torque converter “stall speed” is the speed that the engine needs to be turning before the torque converter will begin engaging the transmission. Here are some of the most common bad torque converter symptoms that could happen to your Trailblazer. Symptoms of a bad torque converter include a vibration, too much RPM on the highway, and slipping.īad Torque Converter Symptoms: Chevy Trailblazer In the Chevy Trailblazer, a bad torque converter is often caused by bad transmission fluid, worn clutches, bad seals, or loose bolts. Many vehicles with manual transmissions do not have a dipstick and their fluid level should be checked by an automotive technician as the car will likely need to be hoisted on a lift.Your Chevy Trailblazer’s torque converter is responsible for converting the energy generated by the engine at the flywheel and transferring it to the transmission, creating a bridge between the engine and the transmission. Therefore it is important to use the exact type of transmission fluid stipulated by your Trailblazer's owner’s manual. In Chevrolet's quest for more performance and better fuel economy, Chevrolet has been coming out with innovative transmissions on a regular basis. Some vehicles are not worth the cost of expensive transmission repairs if, after adding transmission fluid, you notice that your fluid level is low again, try adding some transmission stop leak to fix the transmission fluid leaks in your Trailblazer. You may fix your Trailblazer transmission by adding some transmission fluid if it is low. ![]() If your Trailblazer hesitates when shifting gears, is slipping or seems sluggish shifting from one gear to the next (1st to 2nd gear, 2nd to 3rd gear, 3rd to 4th gear, etc.) check your transmission fluid level first. Your Trailblazer should be running when you check your transmission fluid level, otherwise the fluid level on the dipstick will not be accurate. Does your 2007 Chevrolet Trailblazer have a transmission fluid leak? This video shows how to fix minor transmission fluid leaks in a 2007 Chevrolet Trailblazer.
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