Skip the auto shop - Our mechanics make house calls

Q: Truck won't move while in gear

asked by on

My truck starts up and shifts gears perfectly fine. But it will not move. Would it be an issue in the transfer case or in the transmission itself?

My car has 133000 miles.
My car has an automatic transmission.

A: Hello and thank you for your question. The ...

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 the brakes are okay, then the problem lies within the transmission or transfer case.

The transfer case could have the shifter placed into neutral causing the vehicle to not move. Try tapping on the shifter motor on the transfer case to see if it is stuck. Then start the engine. While the transmission in park, put the transfer case in 4wd and then in 2wd. This will make the shifter motor move and engage the transfer case into gear. Then put the transmission into gear. If the vehicle moves fine, then you would need to replace the shifter motor on the transfer case. If the vehicle does not move, then either the shifter motor is not functioning or the transmission is failing.

You could have a problem with the input shaft seals on the transmission. If the drive circuit and reverse circuit seals are split on the input shaft, then the transmission will statically lock itself. The fix to this is to take the transmission out and replace the input shaft seals on the input shaft. To have this diagnosed, I would recommend having a certified technician like one from YourMechanic, diagnose the potential transmission issue and advise you on the proper repair.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: How do you work the manual rearview mirror?

Your car’s rearview mirror provides essential visibility out of the back window. However, you will need to adjust it periodically, as well as after anyone else has driven the car. Here’s what you need to do: Grasp the mirror...

Q: Hard shifting between lower gears

Hey there, thanks for writing in about your 2000 Saturn LS2. This sounds like a common symptom of a transmission valve body not working correctly. The valve body of a transmission directs traffic when it comes to hydraulic fluid in...

Q: Engine starts to rev up on its own

You may be having a problem with the throttle position sensor or throttle pedal sensor. Have the system scanned to see if any problems or codes are for the throttle position. Also, make sure the floor mat or carpet is...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.