Skip the auto shop - Our mechanics make house calls

Q: electrical problems

asked by on

I have a 2004 Chevrolet Tahoe everytime I drive it around it's fine. Once I turn it off I have to wait 15 to 20 minutes to start it back up again. My engine light isn't on so I don't know what's wrong with it.
My car has an automatic transmission.

Ideally, I would ask you a question. Does it crank or not when it won’t start?

This is certainly an electrical component failure. Electrical components are susceptible to heat failures. What I outline below are some of the possibilities.

No Crank

It is very common for Chevy starters to get to hot and not crank the motor. Waiting 15-20 minutes allows it to cool down and then it will turn the motor and allow it to start. There are two ways to fix this.

Heat shield. If the starter has a heat shield, then you will need to replace the starter. if there isn’t a heat shield, you could begin by adding one and see if that fixes your problem. If you have installed headers or an aftermarket exhaust system of some sort, you will need to find a way of keeping the heat from the starter by installing a quality heat shield. There are many different designs of heat shields. Do some research to see what will work best for you. Keep in mind, once a starter begins to exhibit this symptom, you may need to replace the starter as well as add a heat shield.

Crank No Start

Fuel Pump System. The next possibility, but less common in the context of your symptoms, is the fuel pump or fuel pump relay. These two items are electrical components just like your starter motor. All electrical components are susceptible to heat problems. You will need to check fuel pressure when the car won’t start to know for sure.

Ignition. Ignition module is mounted under the distributor cap and is a very common failure of this type. Check for spark when it is failing.

PCM (powertrain control module). The PCM is not a common failure on your vehicle, but it can fail much like the others.

If you need some assistance with these checks, book one of our mechanics to help you diagnose your starting issue and perform the necessary repairs to get your car going again.

Good luck!

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: Radiator leak.

The radiator for the Tahoe has two plastic side tanks where all connections to hoses and reservoir tank are made. This radiator is not repairable and will have to be replaced if the radiator is deemed faulty. A pressure test...

Q: My 2006 Silverado truck seems to be burning oil is this an expensive fix?

Hi there. In most cases, when the engine burns oil or consumes oil every few weeks as you've described, it's caused by one of two things; valve guides that are worn out, or piston rings that are damaged. Both of...

Q: Shaking in steering wheel at 120/km

The most common reason for a vibration while driving is a tire issue. The tires may be out of balance, or just worn to the point that they will cause this. Typically, the brakes won't cause this, unless it happens...

Related articles

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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.