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.

A: Ideally, I would ask you a question. Does i...

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!

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: My abs and parking brake lights are coming on and staying on

Your ABS/parking brake lights are probably indicating multiple problems Check the simple possibilities first like the brake fluid level and the brake lights working. Then check wheel speed sensors (some times bad wheel bearings can cause a wheel speed sensor...

Q: Leaking oil into the intake and PCV and catalytic converter

You would need to have the entire crankcase ventilation system checked and serviced first to make sure all the PCV valves are clean and working correctly, or if excessive oil will be consumed and get in the intake. The turbo...

Q: power shuts down,but will run and drive very slow

For issues like this you should have the system computer scanned and have any codes diagnosed by a mechanic. The cost to have the problem properly diagnosed far out weighs throwing parts at the problem hoping to fix it. The...

Related articles

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 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 to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...