Skip the auto shop - Our mechanics make house calls

Q: My oil pressure switch went out and haven't been able to start it since, what could be the issue? I have since replaced the part.

asked by on

Car just cranks. No turn over and no spark. Please help

My car has 173000 miles.
My car has an automatic transmission.

Hi, thanks for writing in. I recommend checking the fuel pump fuse and especially the fuel pump relay. Make sure you are getting power from the ignition switch to trigger the fuel pump relay. On newer (incl. 2000) GM vehicles, the oil pump switch is a backup electrical path to the fuel pump relay; only coming into play when the fuel pump relay primary path fails. The fuel pump relay may have completely failed at this point. It is also possible that the Pathlock Security system is shutting down the fuel pump for some reason. If the fuel pump fuse and relay check out as working properly, diagnosis of Pathlock issues is next on the diagnostic list, requiring a GM security diagnostic tool. I would recommend having YourMechanic.com diagnose the fuel supply issue, provide an accurate assessment of damage, and estimate the cost of repairs. YourMechanic.com can dispatch a mobile, professional mechanic to your location for diagnosis and repairs. Contact YourMechanic.com to request this inspection and to schedule an appointment.

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
  1. Home
  2. Questions
  3. My oil pressure switch went out and haven't been able to start it since, what could be the issue? I have since replaced the part.

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: Courtesy light fuse drains battery 2000 Chevrolet Silverado

Hi there - great diagnostic work! At this point, having identified which circuit is causing the drain, you will need a wiring diagram that identifies what other devices are on this circuit (clock, underhood light maybe?), and could be drawing...

Q: Message come up Reduce engine power

A reduced power light usually indicates a fairly serious problem with the throttle system. When this light illuminates the vehicle will often go into a “safe mode”, which will severely limit the speed of the car and in some cases...

Q: Random stalling

It sounds like you may have a dirty or failing idle air control valve. The idle air control valve reads the air intake as it is mixed with fuel prior to being injected into the engine at low speeds and...

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...