Question about 2003 GMC Yukon XL

1 Answer

Car wont start when parked on hill

2003 yukon when under 1/2 tank and sits over night on slight incline, wont start until i roll it down level or add gas.

Posted by Anonymous on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 4 Answers

I HAVE THIS EXACT PROBLEM. If you got this repaired, what was the fix??

Posted on Sep 18, 2014

  • brian
    brian Oct 19, 2014

    OK I HAVE THE ANSWER. The fuel pump needs to have an adequate gas supply to start up. When low, or on a steep angle, and especially when BOTH conditions occur, the pump is no longer submerged. A check valve is intended to retain gas at the pump in that case, but over time it leaks. So actually, there are THREE things that must happen -- park on a hill, be low on gas, and leave it there for a long time. The fuel drains out, and no worky. The check valve cannot be easily replaced by itself - it comes wiht the pump as an assembly. Two fixes -- if the check valve is old enough to leak, the pump is old too. Replace them both. Or, just avoid the problem -- the pump could have years left. I had my pump checked, and it does appear to have years left, so now that I know the problem, it hasn't happened again. THIS IS THE CORRECT ANSWER.

×

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

  • 491 Answers

SOURCE: 2002 jimmy sls 4x4 wont start parked it 12hr later wont start

check fuel pump and make sure you have enough gas in it also

Posted on Nov 11, 2008

  • 1 Answer

SOURCE: If I have less than 1/4 tank of gas my yukon won't start.

I had the same problem. I had a few different mechanics tell me that the fuel pump is starting to go out when it does that. The fuel pump is located in the fuel tank, and the gasoline keeps the pump cool and lubricated. When the fuel tank is less than a 1/4 full, the pump is not submerged anymore, and can have trouble sending gas to the engine. My emergency fix was to get underneath the car on the driver's side and bang on the gas tank about three times. It will start up, and will run great unless you turn your engine off. But eventually you're going to need a new fuel pump. Once I replaced it, the problem went away.

Posted on Mar 26, 2009

  • 14036 Answers

SOURCE: 04 GMC Yukon won't start on less than 1/4 tank of gas

have your evaporative emission control system check.sound like you have purge valve solenoid not working or vent valve control solenoid.have it scan.to see which component not working..reason your gas tank expanding. your fuel vapor building up pressure.your purge valve and vent valve open allowing gas vapor from charcoil canister. to be burn in the intake manifold to be burn in combustion chamber.

Posted on Jun 06, 2009

roniecon
  • 6826 Answers

SOURCE: 2004 GMC Yukon won't start if less than 1/4 tank of gas

sending unit for gas gauge is not correct

Posted on Jul 07, 2009

  • 117 Answers

SOURCE: Gmc yukon stuck in park.

possible brake switch not sending signal to shifter solenoid to allow shifter movement. possible broken shifter knob/relay rod in shifter assembly

Posted on Nov 15, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

Where do I start to look at when engine overheats when air conditioner is on


The A/C causes the engine to work harder (that's why fuel economy suffers when it is run).

If your car has an electric fan - make sure it runs when the engine is hot. If it does not - you may have trouble w/o the A/C running if is gets warmer outside. Look for fail fuses, disconnected plugs, etc.

You may also have flaky thermostat that is not opening fully when needed to exchange hot water in the engine block with cooler water in the radiator.

First, check the coolant level. You should find a semi-transparent reservoir / tank located under the hood that has a cap marked "Coolant". The side of the tank should have two indicator lines - one for HOT and one for COLD. If the engine has been run up to normal temperature (so that it can provide heat in the car), you should see the coolant level at or slightly above the HOT line. If the engine is cold - first thing in the morning or after sitting for several hours - the coolant should be at or slightly above the COLD line. View these levels while the engine is off and the car is parked on a flat, level surface. If there is not enough coolant - you will need to add the CORRECT type for your car.

Hot Engine
(1) With the engine hot, add enough coolant to the tank to bring the level to the HOT line. You may have to check the tank several times after driving if the coolant level in the radiator is down a great deal. NEVER open the radiator cap when the engine is warm or hot!

or:
Cold Engine
(2) With the engine cold, add enough coolant to the tank to bring the level to reach COLD line. Additionally - with the engine cold - you can add coolant directly to the radiator by removing the cap. Start the engine, set heat in car to HOT and add coolant mixture to radiator until level comes up to the bottom of the filler neck. Once the engine is HOT (getting heat in the car) check and top off radiator as needed and put cap back on radiator.

Check the levels in the TANK several times over the next few days when cold. If the tank ever empties -you'll need to have this looked at by a mechanic.

Apr 09, 2015 | 2009 Dodge Journey

2 Answers

How do I tighten an automatic transmission in a 2002 3.85 Imala?


this is normal as there is clearance built into the parking pawl in the transmission to make it easier to go from park to a gear. I`m guessing this happens when you put the car in park on a slight incline. if you walk up to any car and push against it when its in park it will roll slightly until the clearance is taken up in the parking pawl, this is the clearance that you have.

Sep 25, 2014 | Cars & Trucks

1 Answer

I have a 1994 honda accord ! The car started givin


You need to let your car cool down over night if possible. If you can't wait over night turn the car off, open the engine hood, and leave it open for a while so it quickly cools down. Check the radiator fluid level. To do this there should be a plastic tank near one side of the radiator which is located on the very front of the engine under the hood. The plastic tank is clear and should have yellow/green fluid in it. If the tank is low or empty let the car cool down like stated above but even longer. After about 1/2 to 1 hour with the hood open it is safe to open the cap located on top of the plastic tank. Add pre-mixed coolant fluid through the cap until the fluid reaches the "FULL" mark on the plastic tank, replace cap, start engine and let it idle or run for about 15 minutes with the hood open. Check the fluid in the plastic tank again and add fluid if needed. Repeat until fluid remains at full level. IF YOU DO NOT HAVE COOLANT FLUID AND CAN NOT BUY SOME YOU CAN USE JUST PLAIN TAP WATER BUT YOU BETTER HAVE YOUR RADIATOR FLUID CHECKED BEFORE WINTER. Good luck!!

Aug 31, 2014 | Cars & Trucks

1 Answer

My 1999 lincoln Continental wont shift out of "PARK"


Is the vehicle parked on an incline? The parking pin may be slightly jammed. If you can VERY CAREFULLY nudge the vehicle up the hill an inch or two, using another vehicle, the shift lever may free itself.
If the vehicle is parked on level ground, suspect the LOCKING SOLENOID for the shift lever.
Less likely, the parking pin may be jammed (inside the transmission), or the shift lever linkage may have become damaged.

Aug 12, 2014 | 1999 Lincoln Continental

1 Answer

When I start the car, I can't put the car in shift mode. Unless I am on a slight incline and put my emergency brake on to roll. What is the problem and how much will it cost me to fix?


Can't shift out of park because I've parked on a slight hill and my car has backed up slightly jaming the parking pawl in the automatic transmission after I have shifted into park but before I have set the parking brake. This is a complaint that Ford owners have had for years. Try this proceedure to see if this solves you problem and best of all it's Free. 1st when you park develop the habit of; while still having the foot brake down apply the park brake firmly first and then shift into park and then release the foot brake. Remember it is important to apply park brake with enough force to prevent the vehicle from rolling. What happens is in the rear of an automatic transmission there is a coarse gear that has a lever that engages this larger gear and when you shift into park range this lever goes into one of the spaces in the larger gear and stops the car from rolling. If the car starts to roll it can Jam the lever against the gear and make it difficult to shift out of park. By using the procedure I've outlined it prevents the lever OR Pawl from being jambed into the larger park gear. Try to make this a habit and you shouldn't have anymore problems.

Oct 14, 2010 | Ford Taurus Cars & Trucks

1 Answer

When fuel is below 1/4 tank going down hill car acts like its not getting fuel it sputters until elevation levels or begins up hill incline


1/4 tank on the flat. You fuel system is sucking air on a grade bcause it is all going t the front of the tank. !/2 tank is about as low as you should go.

Nov 12, 2009 | 1992 Buick LeSabre

2 Answers

Suburban will not start under 1\4 tank of gas.


yes it could be the fuel pump. my chevy truck was doing something similar, would start unless i parked on an uphill grade. when you turn the key through run to the start position the fuel system pressurizes. if your fuel pump is weak it can't draw hard enough to pull the fuel up. as long as the vehicle is running the fuel system is primed, but when you shut it off it runs back down to the tank. that's the way it's designed and it's not normally a problem, but if your fuel pump is getting tired it can't pull it up any more. just a tip, if you live in a hot climate, especially in the summer, your fuel pump will live longer if you keep it over a quarter tank. the fuel pump is really just a little electric motor that incidentally pumps fuel and generates a lot of heat. the fuel in the tank helps soak up the heat and let your fuel pump live longer. hope that helps

Jun 05, 2009 | 2003 Chevrolet Suburban 2500

1 Answer

Will Not idle when sitting up hill.


If the car is facing up hill at an idle, it may be that the fuel pump is located on the front of the fuel tank.

I would suggest either trying to park the car facing downhill, or having a full tank of gas when parking the car.

Thank you for your question, and please let me know if there's anything else I can help with.

-Mike

Apr 05, 2009 | 2003 Mitsubishi Eclipse Spyder

2 Answers

Chevy uplander ran out of gas and now it won't start


I had a similar issue with my uplander. They don't have a reset switch on the pump but if the vehicle is CLOSE to running out of gas and you happen to park on a grade where the front of the vehicle is pointing down then you may have trouble starting the vehicle until it level's out.

All I did was apply some gas pedal while starting and it started. Then I got to a gas station ASAP. If you're right out of gas you may want to add some to the tank and let the vehicle sit in the ignition on position without starting it for a minute or two to get some fuel back in the lines before starting it.

Dec 14, 2008 | 2007 Chevrolet Uplander LS Minivan

Not finding what you are looking for?
2003 GMC Yukon XL Logo

178 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

75797 Answers

Freddy

Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22114 Answers

Are you a GMC Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...