Skip the auto shop - Our mechanics make house calls

Q: Speedometer stuck at 120 mph and 4WD not functioning

asked by on

We have been having trouble with our truck. The speedometer is stuck at 120 mph. Also, the 4WD is not functioning and the lights will not come on the control panel for the 4WD. We checked all the fuses and then we disconnected the battery. But that didn’t help the problem at all. It still exists. Is there any way to fix this problem without having to replace the whole speedometer? Thank you.

Hey there. It may help to find the fuse for the instrument cluster, remove it for 10 minutes or so, then re-insert the fuse. Chevrolet appears to have had a "customer goodwill" repair available for this if your vehicle had less than 70,000 miles, but that was some time back as of this writing (7/16). Probably have to remove the instrument cluster and send it to an instrument specialist for repair. If you would like an independent mechanic to check this, a certified professional from YourMechanic can come to your car’s location to inspect the speedometer.

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

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: What does the Continuously Variable Transmission (CVT) Check warning light mean?

If your car has a Continuously Variable Transmission (CVT), there is a warning light in the dash designed to come on if a malfunction is detected. However, the light should come on briefly during the cranking process. It shouldn’t stay...

Q: Transmission won't shift out of second gear

All three problems may be related. You will have to get the computer scanned to see if you have a bad speed sensor. The speed sensor will sense the speed in which you are going; the computer will use this...

Q: Reduced power comes on message in truck have no gas petal and it sputters like bad plug 2004 Chevrolet Silverado 2500

Hello - the first task is to check for problem codes that are setting the Check Engine light on. The loss of power could be due to a failing throttle position sensor, or fuel pump. I recommend a loss of...

Related articles

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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...