Question about 2002 GMC Sierra

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Help with 2002 GMC Sierra Denali, we drove the vehicle parked it and then it would crank but die again fuel pressure is 60 psi, changed spark plugs, fuel filter and noticed the security light is on.

*** the passenger door actuator that locks and unlocks the door is bad. So have to order that on Monday

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  • Susan wise
    Susan wise Dec 13, 2014

    Now we have a short in the electrical system. We can't find it any ideas

  • Susan wise
    Susan wise Dec 13, 2014

    The battery runs down overnight

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1 Answer

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  • Contributor
  • 26 Answers

The truck's probably been disabled by the security system. that may involve a trip to a dealer to set right.

Posted on Dec 08, 2014

6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: Hi, I have a 2003

I have a similar problem. The remote sometimes opens all doors, and other times it will only open the 2 rear doors. Once inside the vehicle, the driver side window controls intermittently operates all windows and doors. It has no effect on the 2 rear doors, as the window controls still work. This behavior happens intermittently while driving the vehicle.

Posted on Oct 13, 2008

emissionwiz
  • 75222 Answers

SOURCE: 2003 yukon xl 5.3l flexfuel all plugs lean on passenger side

P0131 - Heated Oxygen Sensor (HO2S) Circuit Low Voltage

P1133 - Heated Oxygen Sensor (HO2S) Insufficient Switching Bank 1 Sensor 1


Bank 1 Sensor 1
P0300 - Engine Misfire Detected

I would check for vacuum leaks, maybe intake or brake booster

Posted on Dec 17, 2008

  • 1 Answer

SOURCE: Vehicle dies while driving down the road.

could it be the A/C pump kicking in. might be boging down the motor or electrical circuit, not letting the injectors get enough power. This could happen if the bearings are going bad in th A/C pump or there is a short in it. Just an idea. sounds like you have done the main components.

Posted on Apr 16, 2009

GM Elec
  • 1000 Answers

SOURCE: 99 GMC Sierra Pickup: Crank but no start. starts

The theft light issue is a good observation. Have you replaced the key tumbler or an ignition component lately? Has there been a lightning storm close very recently?

What the flashing security light is indicating is an attempt to relearn the key you are using.
Turn the key to run position, allow light to flash for 10 minutes, when light stops flashing turn ignition to OFF position for 5 seconds, turn ignition to run position and start over. Do this for 3 consecutive cycles, the the theft system will relearn the key cylinder code and store it once again.
Try that first before you go any further.
Let me know what you find.
Regards,

Posted on Apr 30, 2009

  • 1015 Answers

SOURCE: 2006 GMC Yukon Denali XL Rear Hatch & Glass locks not working

Could be the latch mechanism for the door is sticking. You could try using some white grease on the latch and the contact where the latch hooks to. You can purchase the grease from most auto parts stores. You will not need to use alot. Just apply a small amount to the mechanisim and then work it in using the manual handle. Then open and close the door several times to feel the "action". Then apply a little more and repeat. This should loosen the latch and get it working again. Also make sure that none of the tension springs have come loose on the latch. And check the seal around the door and make sure it is not pinched and has a proper fit.

Posted on Dec 29, 2009

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1 Answer

Help with 2002 GMC Sierra Denali, we drove the vehicle parked it and then it would crank but die again fuel pressure is 60 psi, changed spark plugs, fuel filter and noticed the security light is on.


The security, antitheft or lock picture/icon is a visual indication that something in the car's antitheft system is failing. In most GM cars and trucks there is a hidden system that most people are unaware even exists. From the moment you put your key in the ignition, there begins a constant line of communication between your key's security chip or transponder, to the ignition's lock cylinder, and then to the car's TDM (Theft Deterrent Module). These 3 parts are in CONSTANT communication. If the key is in the ignition, then these parts are sending signals to each other. The security light illuminates when that signal gets broken, even just for a second. When the signal breaks, the car misinterprets this as an attempt at theft and goes into antitheft mode. The car thinks its being stolen or hotwired because it is not getting that signal from YOUR specific key. This is why the security light turns on and shuts down your vehicle. This link explains it pretty well.
http://www.diy-gm-security.com/
http://newrockies.com/

Dec 06, 2014 | 2002 GMC Sierra

1 Answer

My van just died 1 day after work. it's getting spark and fuel but wont start. i already replaced the crank sensor and it still wont start. please help me?!!!!!!!!!!


the first thing is check your fuel pressure for the right psi. some vehicles will not start if the pressure is off only by a couple psi. your particular van is epuipped with a injector module assembly under the upper intake manifold. commonly called a injector spider. those are notorious for leaking and will keep a vehicle from starting. also while your checking your spark how did you do it? if the spark was any color but blue it is too weak of a spark and the vehicle will not start with that. this could be worn plugs, wires or weak coil.

Apr 10, 2011 | 1997 GMC Sierra

1 Answer

Vehicle chokes, sputters, and then shuts off


Start with the simple and replace the fuel filter. The fuel filter may have reached the end of it's life time and is dirty causing the issues you have. The worst is the fuel pump it self has gone bad and needs to be replaced, the fuel pump should be producing 62 to 65 PSI when the engine is started and should drop no more then 5 PSI when the engine is running. You can check the fuel pressure at the shredder valve with a fuel pressure gauge. Good luck and keep me posted, be glad to help get your Yukon running 100% again.

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Can Fuel pressure cause no spark in a 1997 GMC Sierra? I replaced the fuel pump. drove 30kms and it died. I have no spark. Any ideas for this?


Do you still have fuel pump pressure?Is there fuel getting to the cylinders?If all the fuses are good,then replace the crankshaft sensor.

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May 05, 2009 | 2002 GMC Sierra

1 Answer

Have 99 sierra has spark and fuel to intake but wont start sometimes sputters but no go please help


You need to find out if you have enough fuel pressure, and if you have injector pulse. A noid light is a simple kind of test light that you can get at a parts house to test injector pulse. Unplug an injector and plug the noid light into the harness. Have someone crank the engine, if it flashes then your injectors are firing. Check all the fuses under the hood. You should have 55 to 60 psi fuel pressure.

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1 Answer

Completed tune up, drove for 2 blocks, engine shut down


Just having fuel is not enough on this engine, here are the spec's. Even 1 psi out of spec can cause a no start.

Fuel Pressure
Pressure 1 (PSI) Pressure 2 (PSI) Pressure 3 (PSI) Range Note Range Note Range Note 60.0 - 66.0 Y131 50.0 - 63.0 Y132 66.0 Y133 Y131: System pressure with ignition on (PSI).
Y132: System pressure while idling (PSI).
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2000 GMC Sierra cranks wont start


Hello, 9-10 volts is not enough to keep a modern vehicle running. Taking in consideration the age and model of this truck, it could easily be an alternator failure.
I hope this helps.
CYA Gator241

Feb 07, 2009 | 2000 GMC New Sierra 1500

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