Question about 2004 GMC Sierra

1 Answer

Truck broke down wont start.

Ran over a truck tire on the highway.No damage underneath.
Fuses good. Relays good. Fuel pump has great pressure but no power to pump. No engine code. Is there a fuel accident cut off switch?

Its a 2004 GMC Box truck. Ex penske rental.I think its on a Savana van frame. V8

Posted by on

  • Anonymous Mar 28, 2014

    how to remove the pressure hose from the power steering pump and the frame of the truck?

×

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 1,596 Answers

There is no Inercia Switch to reset Like Ford
Have you Double Checked All Underbody wiring for fuel pump ,OPEN In Pink/blk tracer fuel power lead,also
Oil Sending unit on most GM Vehicles have the ability to turn OFF GROUND to Fuel Pump Relay as a Proyection Against LOW OIL Pressure in engine.


Fuel Cutoff Mode
The PCM cuts OFF fuel from the fuel injectors when the following conditions are met in order to protect the powertrain from damage and improve driveability:

  • The ignition is OFF. This prevents engine run-on.
  • The ignition is ON but there is no ignition reference signal. This prevents flooding or backfiring.
  • The engine speed is too high, above red line.
  • The vehicle speed is too high, above rated tire speed.
  • During an extended, high speed, closed throttle coast down-This reduces emissions and increases engine braking.
  • During extended deceleration, in order to prevent damage to the catalytic converters

Posted on Jan 26, 2009

  • Ronnie Wilson Jan 26, 2009

    OOPs PROTECTION Against Low oil Pressure

×

Ad

1 Suggested Answer

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 Mechanic 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 repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Not getting power to fuel pump on 1987 pontiac bonneville.all fuses and relays have been replaced.also new fuel pump.HELP!


Engine computer supplies voltage through oil pressure switch. No oil pressure no power to fuel pump. Turn key on you should get a 12volt shot to fuel pump to prime system. After that the oil pressure switch has to be good to continue to hive 12volts to pump

Jan 23, 2017 | Pontiac Bonneville Cars & Trucks

2 Answers

Cranks but does not start? Car stalled out on highway.


First check the engine computer for fault codes, address any found. If not codes then check fuel pressure. If pressure is ok make sure fuel is being injected, if that is ok for engine mechanical issues

Jun 16, 2017 | Cars & Trucks

2 Answers

Ran out of gas, put gas in it and now it will turn over but wont start


Year of the truck is important.
if it is late 1990s or newer, listen for the fuel pump in the gas tank. If you do not hear anything, then make sure you are getting power to the pump. If you are getting power, then the pump probably needs to be replaced.

Jun 02, 2015 | 2007 Dodge Caliber SRT4 Hatchback

1 Answer

I have a 2002 buick rendezvous I am have trouble with the fuel delivery it's not getting any power back to the fuel pump we had it started when we ran a wire to fuse box and ran it strait to fuel pump...


check the pressure regulator and wiring
some models use the regulator to notify the ECM that pressure has been reached so the ECM cuts off power to the pump relay until the pressure falls

Apr 13, 2017 | Cars & Trucks

1 Answer

I was driving the car on the highway and all of a sudden it lost power, trying to accelerate did nothing so i just rolled to the nearest place i could. tried to turn car back on engine only turns over, no...


the fuel filter is located on the side of the driver side frame rail just underneath the car

it is held in by 1 or 2 clamps and looks like this
zomy9y3vva9xysjyhcejrrtg9sr7kkfetklcmxpmssektklcmxpmssektklcmxnoy++8psirvjaaaaaelftksuqmcc

Good luck!

Aug 15, 2011 | 2004 Dodge Stratus

2 Answers

My truck wouldn't start and I had to have it towed home. It would turn over but not start. The wrecker guy said "fuel pump". A couple of other mechanics said the same. I replaced the fuel pump...


Did you check the fuel pump pressure on the old pump before removal? Did you change the fuel filter before removing the old pump? Did you check to see if you could hear the old pump running when you turned the key on? Did you check the fuel pump relays or fuses? Did you check to see if you have power going to the fuel pump at the fuel pump electrical connector, on the Wire harness side of the connector? Make all of these same checks for the and on the new pump. for a gas engine also make sure you have good spark to each spark plug. Good Luck and have a good XMASS. From Ernie at RedDeer, Alberta, Canada.

Dec 24, 2010 | 2003 Dodge Durango

3 Answers

Truck will not start, has fire. relay ok. no trouble codes.


when you turn the key in 'on' position, do you hear the fuel pump hum? check under hood in black box,,fuses,,and relays. for bad fuse or fuel pump relay bad. try bumping fuel tank with something hard to see if fuel pump will engauge with key on. maybe bad pump. have you had off road? look for pulled plug from fuel pump underneath near gas tank.have you bent or damaged your igbition key somehow? the key sends a signal to your cars computer to engauge the pump and crankshaft sensor.but if you do have fire,,,it's a fuel problem, so you are on the right track. if nothing i've said helps, check for a bad fuel pressure regulator.hope this helps and thank you for choosing fixya.com!!

Nov 19, 2010 | 2001 Dodge Durango

2 Answers

1998 gmc 2500 sle 5.7 wont stay running


Theres only one fuel pump relay, unless you have dual tanks. Be sure you have 55-60 psi fuel pressure. I "think" the oil pressure switch supplies power to the fuel pump after the engine is running.

Dec 14, 2009 | 1998 GMC Sierra

1 Answer

95 sedan deville wont start and says fuel low with gas in tank


I'd start by tracing the fuel supply and return lines from the gas tank to the engine compartment. Make sure that they are free of kinks or other damage.

Next, check the fuse box and make sure there is power to the fuel pump. Trace the electrical connections leaving the fuel tank and make sure they weren't torn or otherwise damaged by the tire tread.

Hope this helps and good luck!

Jan 13, 2009 | 1995 Cadillac DeVille

Not finding what you are looking for?
2004 GMC Sierra Logo

595 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

77499 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22306 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

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

Answer questions

Manuals & User Guides

Loading...