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Gears

Hello. For this issue with your 1997 Saab 900, I suggest checking the operation of the crank position sensor (https://www.yourmechanic.com/services/crankshaft-position-sensor-replacement). If the current position sensor goes bad, it won't send the parameters to the engine for it to calculate how...

Hey there. This maybe related to many different transmission components such as a speed sensors (https://www.yourmechanic.com/services/speed-sensor-replacement), the transmission control solenoid or the module itself. The transmission control solenoid (https://www.yourmechanic.com/services/downshift-solenoid-replacement) controls the flow of transmission fluid inside the transmission. Every time...

Hello and thank you for your question. The problem could be 3 different things wrong with your truck. First, look at the brake system to ensure that the brakes are not engaging when you put the vehicle in gear. If...

Hello there, thank you for asking about your 2006 GMC Sierra 1500 HD. If your vehicle will not shift out of first gear, the problem is not the fuses. The problem could be a shift solenoid, but more than likely,...

In order to shift out of park, the transmission module needs to see the engine idling and the brake pedal depressed. If one of these criteria is not met, then it will not let you shift out of park. There...

What a technician would do is first check the level and condition of the transmission fluid (https://www.yourmechanic.com/services/transmission-fluid-service) on your 2001 Audi A8 Quattro. Next, they would use a Volkswagen-compatable scan tool which will allow the Transmission Control Module (TCM) to...

Have the drive shaft joints and rear axle pinion bearing checked to see if they have excessive play. Also, check to see if you have any broken motor or transmission mounts. This should help narrow down the problem for you....

Do not change the fluid or have it flushed. This could cause the transmission to go out even sooner. There are a load of different additives out there that may or may not work, but when the transmission is going...

When a transmission fails, the vehicle will seem as though it is in neutral. Sometimes if you rev the engine high it might move slowly. If this is the case of if the vehicle does not move at all, yes...

The Aveo's computer needs to "see" the brake light switch input, in order to switch out of park. With the key on and engine off, the brake lights need to be checked to see if they are coming on when...

Hello there, many different faults may be causing your 1988 Chevrolet C2500 not to shift. The most common would be low transmission fluid (https://www.yourmechanic.com/services/transmission-fluid-service), shift linkage, transmission range sensor (https://www.yourmechanic.com/services/transmission-speed-sensor-replacement), shift solenoid (https://www.yourmechanic.com/services/downshift-solenoid-replacement), or a mechanical transmission fault. Have a...

Hello, the automatic transmission has 3 systems; electronic, hydraulic, and mechanical. What describe could be an internal mechanical failure with transmission. There also could be a hydraulic failure internal with transmission creating only the forward gears circuit to operate. The...

All three problems may be related. You will have to get the computer scanned (https://www.yourmechanic.com/article/what-is-the-on-board-diagnostics-obd-system) to see if you have a bad speed sensor. The speed sensor will sense the speed in which you are going; the computer will use...

Hello there, a few different faults can cause the transmission to become stuck in park like this. The most common are the transmission range switch, neutral safety switch (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-neutral-safety-switch), or a brake switch issue. Faults that occur intermittently like this...

Hi there. When your model Civic begins to experience this it it is the first sign of transmission failure. The transmission fluid needs to be checked to see if it is at the right level. If it is check the...

Unfortunately the information provided for your Jeep Grand Cherokee is general and a bit limited. It appears that the quality of the fluid in your vehicle may be dirty and I would recommend having a transmission service (https://www.yourmechanic.com/services/transmission-fluid-service) performed. A...

Hello. If the shifter itself is not moving then the linkage may be binding so that needs to be checked out first. Most of the time the joints in the linkage will cause this when they fail. If the transmission...

A few different faults can cause rough shifting after the vehicle warms up like this. The most likely would be the transmission fluid level, transmission filter (https://www.yourmechanic.com/article/how-long-does-a-transmission-filter-last), shift solenoids (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-shift-interlock-solenoid), torque converter, or the transmission linkage. Any of these, once...

Hello, thank you for writing in. Unfortunately this is one of the situations where the possible causes can be with a lot of different components. You may want to do some further testing on the intake air temperature sensor. There...

The speed sensor itself does not have a gear permanently attached to it. The driven gear as it is known, should be already installed in the transmission. There is most likely a single slot that engages with the top of...