Skip the auto shop - Our mechanics make house calls

Q: Won't shift out of second gear - 2000 GMC Sierra 2500

asked by on

After I had the transmission filter replaced, the truck started developing some issue with the transmission. I couldn't shift it into overdrive but it got worse. Now, I'm not able to shift out of second gear. I still can put it to reverse though. I had the fluids checked and they are good. What might be the cause of this?

A: Hello. This definitely sounds like an elect...

Hello. This definitely sounds like an electronic transmission control issue. It could be something as simple as a transmission range selection switch or something as serious as a transmission valve body. You may want to consult with a transmission shop or dealership to assist in this issue.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: How Long Does Transmission Fluid Last?

The best guideline for when to change automatic transmission fluid comes from the manufacturer of the transmission itself. The owner’s manual for each vehicle provides the recommended mileage intervals for service. Typical recommendations generally range from 30,000 to 60,000 miles....

Q: What does it mean to have the O/D OFF light on

When the O/D off light is on this means the overdrive gear is turned off and the torque converter will not lock up. This setting will help if you are towing something behind the vehicle. When the light is off...

Q: Trouble code P0060 after changing out all of my O2 sensors

Hello. Code P0060 comes on when the computer detects excessive resistance in the heater circuit for oxygen sensor 2, of bank 2. If all of the sensors have been replaced then it may be possible that the issue is rooted...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...