Skip the auto shop - Our mechanics make house calls

Q: Ignition problem on 2004 Chevrolet Suburban

asked by on

My ignition turns over but will not fire dash lights comes on but nothing I've replaced the ignition key lock and ignition switch and still nothing so I installed a push start button it works but now there's no AC or heat and truck feels like it's brakes are on while I'm driving

My car has 112343 miles.
My car has an automatic transmission.

A: It sounds like you may have a failing relay...

It sounds like you may have a failing relay or fuse block, either of which could stop certain components from being powered up, which may keep it from starting. It's also possible that even though the ignition switch and key cylinder are both new, that there is a problem with the new parts. By installing a push button start, you have bypassed major parts of the ignition system, and are allowing the truck to operate when it shouldn't.

My suggestion would be to check all of your fuses and relays very closely, and the connections to them. Look for any dark, burned looking connectors, or melted fuses/relays. Also, test each relay for operation. If this yields no results, you will have to hire a qualified professional, such as one from YourMechanic, to help diagnose your starting issue and let you know what repairs are necessary.

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: Reduced engine power

Code P0120 relates to the throttle position sensor and can be caused by the following: Sticking throttle return spring MAP or TPS connector corrosion Misrouted harness causing chafing Bad TPS Bad PCM Code P0220 relates to the...

Q: Won't start cranks over - 1983 Mercedes Benz 500SL

Gasoline in the crankcase can be a big problem. It washes everything dry of lubrication and can cause damage. Hook the battery up to a charger and change the oil again. Pull all of the spark plugs to see if...

Q: changed my ignition on a 2005 Yukon GMC now I can't get the car to start and stay on

You have to do the "re-learn" procedure for the ignition switch. The ignition switch/cylinder is part of the anti-theft system. When you replace a key or ignition switch/lock cylinder, you must do this procedure in order for the vehicle to...

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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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...