Why does my Yukon not start on the first try?

About a week ago my Yukon started to have a starting issue. It will not always start on the first try but always starts on the second. There are a few things that I found while trying to diagnose this problem. It dosen’t matter if the engine is hot or cold and it only happens about 50% of the time.

What did my 02 Yukon XL die of?

Last summer my 02 yukon XL died while my wife was driving, she said it would lose power, and die, it restarted a couple of time, drive for a few miles, the same thing. we replaced the fuel filter, and got it home, test fuel pressure, all seemed okay.

What was the problem with my 2001 Yukon XL Denali?

I love my 2001 Yukon xl Denali with over 130,000 miles but having some starting problems. The initial problem was taking several tries to start, when after it seemed a clog was cleared and the engine banged loudly once it would clear and start and be ok for the rest of the day, but a little more difficult in colder weather.

Why does my GMC Denali run rough in the morning?

I have a 2001 gmc denali that runs rough in the morning – usually after it rains or sits (with humid weather). SES light blinks and code indicates all cylinders missing. Problem goes away after running 10-15 minutes (engine heats up). Dealer can’t figure it out – recent wires and plugs done.

What is the service brake booster message on a GMC Yukon?

2003-2006 GMC Yukon, Yukon Denali, Yukon XL, Yukon Denali XL Condition/Concern: The Service Brake Booster Message is used to notify the driver of a Supplemental Brake Assist (SBA) concern on vehicles equipped with rear disk brakesand a vacuum brake booster.

When did Sierra stop using vacuum brake booster?

This DTC will not be in eSI if working on a 2004-2006 utility vehicle, due to all utilities use a hydroboost brake systems starting in 2004. Also note that starting in 2005; the Silverado and Sierra no longer use the SBA on vehicles with rear drum brakes and vacuum brake booster.

Why does my GMC engine start but not run?

Repair guides and support for cars, trucks, and SUVs manufactured by GMC. Answered! View the answer I have this problem too Is this a good question? An engine will start but not run when the fuel runs out .

What to do if your truck wont start?

To avoid throwing guesses and parts at your truck, have the truck scanned for trouble codes as a first step. Some of the auto parts suppliers offer free code reading like Pepboys, Nappa, Advanced auto parts,etc and some of the guys are very knowledgeable and may have seen the issue often and put you on the right track.

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.

Is there an intake manifold leak at high idle?

You may have an intake manifold leak on the bottom side of the engine at the lifter galley (I base this assumption by the fact that when you spray eather into the valve cover it changes the engine speed.) Re: high idle PLEASE HELP!!! You probably have a leak like aste25 mentioned.

What’s the idle RPM on a Silverado Silverado?

Re: high idle PLEASE HELP!!! When i pull the vac line from the booster the idle rpm stays at the 1200 I had been idling for 2 yrs. It only runs rougher but maintains 1200. When I pull the same line from the back side of the intake she revs really high. Enough to scare you so I plugged it back in really fast.

What does it mean when your engine idle does not increase?

Use the command in the scan tool to increase the engine’s idle. If the engine idle does not increase, it means there is an issue at the idle control motor of its circuit preventing the signal from changing the idle. You can purchase a bidirectional scan tool at your local auto parts store.

How often does my GMC Truck turn over?

So far this has been the case pretty much every time i am starting the truck cold. I’ll try to start it and it will turn over for about 3-4 seconds (have tried a bit longer, still no go) then i’ll stop and try to start it again, and the second time it fires right up.

What to do when your GMC Truck won’t start?

Try turning your key to the run position a few times (with out starting). Then try to start it. If it starts, sounds like what mine did. I replaced the fuel pump assembly and that fixed the problems. Very common problem.

Why does my Chevy Silverado want to turn over?

Truck wants to turn over but will act as if is starving for fuel,wait ten minutes, it start. Been happening frequently lately. I also was told it was the security system Will turn key and it is like no power from battery to starter, but have lights, radio, etc. Turn key again or sometimes multiple times, to no avail.

Why does my GMC Yukon engine not start?

GMC Yukon: Engine Cranks → Won’t Start There are a lot of issues that can cause your Yukon to crank, but not start. The engine needs air, fuel, and a spark in order to run. It is highly likely that if the engine is cranking, but not starting that it has thrown an OBDII code.

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?

Why is my fuel tank collapsing on my GMC Sierra?

I’m also having this problem with my 2000 GMC Sierra SL c2500 5.7. It creates a vacuum and collapses the fuel tank. Im on my third fuel tank but didn’t realize at first a vacuum was crushing it. Any ideas? It seems the more I read, the more possibilities that could cause it but its getting expensive with the tanks and pumps.

What are the lines on a 97 Vortec?

There are three lines to the tank. 3/8, 5/16, and 1/4 inch. 3/8 is the supply line. Fuel is pumped through this line from the tank to the fuel metering body. (No TBI on a 97 Vortec). The 5/16 returns excess fuel from the metering body back to the tank. The 1/4 line is the vent line.

Are there any problems with the GMC Sierra?

While General Motors has been making phenomenal strides with many of their vehicles, we consistently see one problem plaguing the GM line, affecting a number of models such as the Chevrolet Silverado, Chevrolet Equinox, GMC Acadia, GMC Sierra, GMC Savannah, GMC Canyon, Buck Enclave, Cadillac Escalade, and Cadillac SRX.

When do traction control lights come on on a GMC?

The stabilitrak and traction control lights come on and service lights for both come on at random. The usually common before I reach 20 mph, and is random. Some days it won’t some days it will. I have stopped turned the ignition off for a few minutes, and restarted and it goes away. Days later its back.

How do you heat the back of a GMC Yukon?

Press the button to cycle through the temperature settings of high, medium, and low. The indicator light will glow to indicate the level of heat selected. To heat only the seatback, press the vertical button with the heated seatback symbol. An indicator light on the button will glow to designate that only the seatback is being heated.

What does a warning chime mean in a car?

Warning sounds in vehicle’s warn the driver about issues that are not set or not working properly. There could be sounds for the following: Seat belt not hooked up when there is someone or something sitting in the seat Door ajar – meaning a door is open but locked on the first click

Is the GMC Yukon XL a registered trademark?

GENERAL MOTORS, GM, the GM Emblem, GMC, the GMC Truck Emblem and the name YUKON/YUKON XL are registered trademarks of General Motors Corporation. This manual includes the latest information at the time it was printed. We reserve the right to make changes after that time without further notice.