Skip the auto shop - Our mechanics make house calls

Q: Gas gauge stuck

asked by on

The gas gauge is stuck on one reading.

A: This is a common issue in GM vehicles. The...

This is a common issue in GM vehicles. The instrument cluster in GM vehicles uses stepper motors to run the gauges. These motors fail often and make the gauges work erratically and give bad readings. The instrument cluster will need to be reconditioned for proper operation. The other part to the gas gauge is the sending unit. This is part of the fuel pump module. If the sending unit fails the reading sent to the cluster will be incorrect. Replacement of the fuel pump module is necessary for repair in this case. A mechanic such as one from YourMechanic can help you determine which of these two is at fault and suggest a repair.

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: Electrical issue

Hello. The alternator failing may have strained the battery as it was going out. You may want to start by having the battery tested. The connection between the starting and charging system also need to be checked. All connections need...

Q: Fan never stops.

Hey there, thank you for asking about your 2007 Mercedes-Benz CLK550. This is a common symptom of a failing coolant fan relay. This relay controls the cooling fans and cycles them on and off based upon temperature. When this relay...

Q: Blinkers occasionally work

If the blinker comes on when you hit the dash I believe your hazard switch may be bad. The contacts on the hazard switch fail when they get hot and the heater is running. It appears to be a common...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
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...