Q: Transmission staying in 3rd gear only and not shifting.

asked by on November 22, 2016

My truck would stay in third gear for months i replaced the tran fluid and the filter but nothing would happen, my trucj would make weird nouses like it didnt wanna shift then after my changing the fluid one time the trans stayed in third gear and would not come out untill i unplugged the batter and figured out it was stuck in limp mode, what do i need to replace so it dosent do that again?

My car has 167000 miles.
My car has an automatic transmission.

Hi there. The transmission could have an issue with the shift solenoids. Check the wiring harness to the transmission case and make sure that it is plugged in. 3rd gear is the only forward gear in a 4L60E transmission that does not require electrical power. It is common for the electrical harness in the transmission to short out. I recommend checking the harness inside the transmission for continuity and if the resistance is too high or an open circuit, then replace the harness inside the transmission. If the harness is good, then it is possible that both the shift solenoids A and B have failed and need replaced. If you need further assistance with your transmission stuck in limp mode, then seek out a professional, such as one from Your Mechanic, to help you.

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 car

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

What tye of prepurchase inspection is best? Bringing mechanic to the dealership or bringing car to the mechanic's shop?

The tools used in an inspection are portable and so either option will work. A more more important consideration in purchasing an inspection is the training of the mechanic and the mechanic's ability, and interest, in finding that which is...

Car wont stay running

The first thing to check is for any broken or loose vacuum lines going to the intake manifold or the main inlet air tube from MAF to the intake throttle body. Any air leaks will cause this problem or if...

1997 GMC Safari SLX 4.3L I Just install a coolant temp sending unit. now my motor wont start. but dose when unplug. what could be

The coolant temperature sensor sends a signal to the ECM to enrich the mixture when the engine is cold (cold engines need more fuel at initial start up), otherwise you will have hard starting or perhaps no starting. Something is...

My car is making a loud vibration when I sit on breaks.

This sounds like a potentially loose motor or transmission mounts. These are the mounts that hold the engine or transmission in the car. When these are loose or broken they can cause a horrendous sound and vibration since they are...

Both handles on passenger door broken

The outside door handle is made of plastic and can be broken apart until you can get to the lever with a pair of needle nose pliers. Make sure the door is unlocked at the time you pull up on...

The interior lights flash when you press the brakes

For your particular vehicle there is a technical bulletin PL1268A, dated on March 4, 2015. It calls for the replacement of the two front overhead console lights with part number 23104411. If you are still under warranty, then it will...

Nissan Frontier VS. Toyota Tacoma trucks

Tacoma by far. The Nissans are decent, but unfortunately, Nissans have been going down the hill in the last decades and Toyota is still standing pretty good. You are not going to get life out of Nissan that you...

Noise from front driver's side.

Without hearing the noise it will be hard to make an accurate diagnosis of the cause but there are several things that can be done to eliminate or highlight possible causes. First is determining the type of noise and conditions...

Related articles

How Long Does a Tailgate Lock Solenoid Last?
If If you drive a truck and more specifically if you drive a truck that offers keyless entry, then getting into your tailgate is both fast and easy. Part of what makes this system so simple is the tailgate lock...
How a Battery Works With a Car's Electrical System
Have Have you ever wondered how your car’s electrical system works? It all starts with your car battery. Your car's electrical system operates on a closed circuit, with the main power system being the automotive battery. It uses less than...
2012 Chevrolet Equinox vs. 2012 GMC Terrain: Which One Should I Buy?
The mid-size crossover SUV category offers the comfort and size of an SUV, but on the platform of a car, giving it the look and feel of a large hatchback. The unibody construction typical of passenger vehicles is used instead...