What kind of engine does a 99 Yukon have?

My 99 Yukon with Vortec 5.7L suddenly won’t run. It cranks over fine, starts in about 1 second (normal), but then dies 2-3 seconds later. Giving it a little bit of throttle while starting doesn’t make any difference.

What to do if your GMC Yukon won’t start?

No matter what I do… take the battery cable off, pull and replace fuses… etc, it just will not start However, if you wait exactly 15 minutes, it will start perfectly fine. Somebody suggested to me that the security system was kicking in and shutting off the ignition coil until it automatically cleared after 15 minutes.

How often does a GMC Yukon engine die?

Engine cranks, briefly… Engine cranks, briefly starts and then dies. The engine cranks over, the engine will start and within one second the engine dies. This occurs once every other month. Took it to dealer for a major tune up and it still happens.

What to do if your Yukon Denali stops running?

I have a 1999 Yukon Denali, stopped running going down the road, acted like it ran out of gas. Added gas, didn’t help. Changed the Crank Position Sensor, didn’t help. Changed the Spark Plugs, didn’t help. No spark at the plugs, no spark out of the coil, changed the coil, didn’t help.

Why does my GMC Sierra suddenly stop running?

Truck suddenly stops running, acting like it’s out of fuel. There is fuel in the gas tank and, I can hear the fuel pump when I turn the ignition on. Is there a fuse, or relay that is maybe causing this to happen?

What are the misfire codes for GM 4.3L?

P0303 Cylinder #3 Misfire. P0304 Cylinder #4 Misfire. P0305 Cylinder #5 Misfire. P0306 Cylinder #6 Misfire. P0307 Cylinder #7 Misfire. P0308 Cylinder #8 Misfire. Sometimes, even tho’ the engine is suffering a bona-fide misfire, no misfire codes are registered in the computer’s memory and/or no check engine light (CEL) on.

How to help me with a Chevy k1500 misfire?

× Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!

Why does my Chevy Tahoe misfire all the time?

But, when the engine gets warm on a hot day, it starts the misfire routine. Appears to be heat related as it will run well all winter. This has been going on for years.