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.

A: Hey there. It may help to find the fuse for...

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

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: Loud clicking noise under dash sounds electrical. I just replaced cluster and it seems to be coming from somewhere else.

The clicking sound in the dashboard could be the hazard flasher energizing when the lights are not on. Also, there could be a sticking blend door motor that is skipping the gears and causing a loud clicking noise. If you...

Q: When headlights are turned on, gauge lights go out

Hello there, thank you for asking about your 1997 Chrysler Intrepid. From your description, it sounds like the speedometer works but just does not illuminate so you can see it at night. If this is the case, the problem likely...

Q: Why did my car leak oil? 2004 Cadillac DeVille

Hey there. You must have gotten the oil filter double gasket from the old gasket O-ring left on and put a new filter on, and it would not let the new filter seal. Remove the oil filter and check for...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...