Skip the auto shop - Our mechanics make house calls

Q: Trans problems no drive or overdrive sometimes

asked by on

Have a 03 GMC Sierra 5.3 4l60e. Was going down the road the other day around 55 and I lost drive and overdrive. Pulled over put it in park and checked fluid it was full. Got in and I was going to baby it home but both gears came back and worked fine then the problem Started coming back more and more until it completely quit. Let it sit for a day or so and hoped in to go to the trash dump and both gears were working fine took it to my old boss man to check it on the computer. Showed a trans fluid pressure switch code.im confused of that's going to fix the problem and I'm also not quite sure what to buy and how to change. I've worked on cars for years but never messed with trans
My car has an automatic transmission.

A: The switch is inside of the transmission. I...

The switch is inside of the transmission. I would recommend having the transmission checked and service by a qualified transmission mechanic so you do not put money into a unnecessary repair. A mechanic can pressure test the transmission to see what the cause is and then quote a repair accordingly.

A code in the computer is only an indicator for a mechanic to know what specific area in the transmission is having a problem. The code will possibly lead to the failed part for an accurate repair. If you'd like a second opinion on this, feel free to contact a certified mechanic who can diagnose your gear issue firsthand.

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: Brake lights work when vechile is off. They quit when you start it

There may be a fault in the brake light switch or corrosion crossing a circuit and making the lights work backwards. This switch is usually found on the brake pedal, but a technician with access to a wiring diagram should...

Q: I change my oil change oil filter fuel pump and filter spark plugs and wires distruibor cab and rotor. Truck shakes why?

If your Check Engine Light is coming on, a fault code should be stored in the ECM. A flashing Check Engine Light indicates a potentially serious engine failure. Since the situation you are experiencing can be caused by any number...

Q: Car overheats when running A/C

Your Jeep has a mechanical cooling fan and an electric cooling fan. The electric one is hidden in the fan shroud. Its main purpose is to turn on when the A/C is on. It is a quiet fan, so you...

Related articles

How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...