Yesterday we went mudding and the truck was fine & this morning i was on my way somewhere and it was running perfectly fine then i out it in reverse and out of nowhere the truck didn't want to shift out of first gear anymore. there's only a certain speed limit i can go. Show
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 This may be 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. This may also suggest a failing speed sensor. The transmission speed sensor is a magnetic sensor that provides this information, allowing the transmission to shift smoothly. The sensor counts the internal number of revolutions of the transmission and transmits that information to the transmission control unit, where the data is used to determine the rotational speed. As the rotation increases, the control unit directs the changing of gears. When this is not working properly, this may cause the transmission to shift erratically or in some cases not at all. I would recommend having an expert from YourMechanic come to your location to take the car for a test drive to more specifically determine the cause for this. The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details Get an instant quote for your carOur certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Experienced Mechanic?Earn up to $70/hrWhat others are askingPassenger's side headlight not working If you have already replaced the bulb, the problem may be with the wiring, or with the headlamp control module that your particular vehicle has. You will need to find a VW qualified technician to inspect and get headlamp working... Anti-theft light is on If the anti-theft light is on, but not blinking, that signifies that the anti-theft system is armed, and ready to use. When it is activated, it will blink, and the vehicle will not start unless the correct key is used,... Car stalls when stopped, steering wheel locks up Yes, this is a common problem with CX-9. Carbon deposits can build in the throttle body (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-throttle-body) causing a restriction in airflow and reaction time of the throttle plate causing stalling with no Check Engine Light or no diagnostic trouble...
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I am trying to locate the fuse boxes in my truck. To explain, the transmission will not shift out of 1st gear. I think that perhaps a fuse has blown and I want to check it out. However, I'm not sure if there is only one fuse box in my truck. I am assuming it is inside the cab and under the steering wheel or it might be under the hood somewhere. Would you please tell me where it is and how to access it? Thanks. Recommended Services
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, you have an internal transmission issue that will require rebuilding or replacing the unit. The 1-2 shift valve may be the problem. A professional, such as one from YourMechanic, can diagnose your shifting problem. The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details Get an instant quote for your carOur certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing Experienced Mechanic?Earn up to $70/hrWhat others are askingCar won't start after cleaning battery The battery terminal connections should be inspected since they were serviced recently. These are often left loose, or even applied too tightly. Allow me to explain: Some people tend to turn the securing fasteners on batteries until they cannot turn... Front of car bouncing Hello, the easy way to test your status or shock is to go to the corner of the vehicle and give it a good bounce up and down. Once you stop bouncing it, it should only continue for one and... Car making rattling sound The problem is likely the catalytic converter deteriorating. This happens over time, and the catalyst will rattle around inside the steel housing. The noise is loudest at start up or while revving the engine. With the engine off and cooled off,... A/C going out Hello there, over time it is not uncommon for the AC to stop cooling as well. Common failure points would be the AC fan, low refrigerant level, AC condenser (https://www.yourmechanic.com/services/ac-condenser-replacement), or a blend motor failure. A qualified technician, such as... Front End Thumping Noise Hi there: At first glance, I'd believe this noise is caused either by faulty wheel bearings or perhaps a warped brake rotor. However, it is very difficult to duplicate a road noise issue inside a shop or on a rack.... Clunking noise when turning or going over bumps. What you are describing sounds like a failing CV joint (https://www.yourmechanic.com/services/axle-cv-shaft-assembly-replacement). A CV (Constant Velocity) joint is a shaft that connects the transmission to the wheels, essentially transferring the power from the drive train directly to the wheels. The CV... Steering wheel is stiff Hi there. Typically when your steering wheel feels stiff, it's an indication of two different possible issues. First, that you have a power steering fluid leak and the system is low on fluid or second, that there is an issue... Related articlesWhat Can Cause a Car to Leak Transmission Fluid? A A vehicle’s transmission fluid system is closed, which means that the fluid or oil inside can’t escape when things are working properly. Therefore, when vehicles leak transmission fluid, it indicates another problem than just a need to add more... Symptoms of a Bad or Failing Fuse If your car's accessories are shutting off on their own or you find a black fuse, you should inspect the car's fuses and replace broken ones. What causes a transmission not to shift out of first gear?You Have a Stuck Solenoid
Your car's computer sends electrical signals to the solenoids, opening them up allowing transmission fluid to flow through them and allowing the gears to shift. However, sometimes these solenoids can get stuck and can prevent your car from shifting gears entirely.
What would cause an Allison Transmission to not shift in gear?Transmission slip — If TCM receives a signal that the transmission is slipping, it'll prevent the transmission from shifting into that gear range. Check transmission operation; if it seems to be working properly, check the appropriate sensor inputs. If the transmission is slipping, repair as needed.
How do I reset my shift Allison Transmission?Press and hold the MODE button for 10 seconds to clear both active and inactive codes.
What would cause a transmission not to shift?Over time, dirt, debris and other tiny particles can accumulate in the transmission fluid, affecting its fluid properties. This can cause the vehicle to die when you shift into drive or reverse, allow a loss of power, transmission slip, rough shifts or even prevent the vehicle from shifting into gear at all.
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Allison transmission wont shift out of first gear
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