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Loss of power under load,then dead battery - 2003 GMC Yukon XL

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Posted on Sep 26, 2009


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I was driving my lr2 and heard load beep then all instraments went dead on dash, radio and rir still work but when i stopped and put in park throtle stopped working and can not shift out of park.

It sounds like you have a dead battery or a total loss of power in the electrical system, this would be an issue that will require some special testing.

Sep 20, 2016 | 2008 Land Rover LR2

1 Answer

While driving veh lost power, as if not getting fuel. RPM would not go up to 2000. Could only go 10-15 mph. Did not stall. that could not be diagnosed.

the voltage to electronics is critical and any loss of generated power from the alternator will result in under voltage to the ECM
that in turn throws out the set parameters of the sensors and so the ECM goes into reduced power mode
the surging could be an intermittent fault in with the alternator , failing cells in battery or loose or failing drive belt
before you spend money on new alternator and battery, you can have the battery load tested and the alternator bench tested as the fix can be reasonably simple

Nov 23, 2015 | 2002 Ford Escape

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Could a short in the plug that goes into an ignition coil for cylinder number 4 or 6 cause a loss of power, a loss of pick up, and can cause a car to completely shut down?

Please charge your battery with a charger before you fry your charging system. It may need to be replaced. It may be too late for your charging system. When you drain the battery dead, there is still chemical energy left in the cells. If power draw is stopped, the battery will seem to charge itself and work again. In doing so, a part of the capacity is sacrificed forever. If the battery is drained empty more than a couple of times, it's time for a new battery.

To the car, a dead battery is an overload. Some vehicles are designed not to try to fully charge a dead battery. Most vehicles will burn the charging system up trying to do so. Same idea, if this happens much you will need a new alternator and maybe more parts.

I would definitely have the car serviced by a pro shop, with veteran mechanics. Discuss your concerns with the ignition and charging systems, and tell the tech about your power loss event. Symptoms such as this are better fixed before murphy's law kicks in and you are left stranded on the road somewhere. The repairs cost less before everything is destroyed as well.

Please find my answer helpful. Alternator com

Jan 08, 2015 | 2004 Infiniti I35

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I have a 2003 Dodge Ram 4x4. Noticed a brief loss of exceleration on a hill, but ran fine after that. Later the battery was dead. Jumped the battery to 1/3 power to see if engine would turn over, and

The initial description is incomplete. what happened after jumping the car? If you jumped timing it would quit running completely immediately. You can have a plug wire that grounds out temporarily under heavier loads when things get hotter. As the heat increases, the resistance in the wire increases and makes it more likely for it to discharge somewhere else. This is much more likely if you have old worn out plugs.

Changing your plugs and wires may help, but without knowing the rest of your initial description it's hard to help further.

Nov 13, 2013 | Dodge Cars & Trucks

1 Answer

2004 Cadillac srx key stuck in ignition and loss of power

if the battery is dead then the key will not come out hook up a another car with jumper cables then it will come out

Aug 26, 2012 | 2004 Cadillac SRX

1 Answer

No power, throughout the vehicle

Re-charge battery and have it load tested. Then, using a digital multi-meter, begin tracing power and grounds from the battery through the system. Something large is likely at fault when you have a complete loss of power so it shouldn't be too hard to find. Get a chilton manual if you can to help in determining wire destinations. If you find that the battery is dead but re-chargable, after charging, check system for draw using an ammeter connected between either battery terminal and cable. Removes fuses one by one 'till you find the system that is drawing power, then check all sub systems associated with that fuse (there are some systems like your radio that always have a small draw to retain memory....ignore those)

Jul 10, 2010 | 2002 Jeep Grand Cherokee

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Intermittent poor acceleration, loss of power. Has

How is your charging system? Sounds to me like it's not charging your battery, so it runs until the battery cannot support the ignition load.

Apr 24, 2017 | 1992 Buick Park Avenue

1 Answer

Power issues... Total power loss only when turning key to "on".

Sounds like poor battery circuit connection breaking down under load. Make sure battery is charged and battery connections are clean and tight. Otherwise, the circuits will have to be traced further back.

Jan 15, 2010 | 1997 Saturn SL

1 Answer

Not cold out,battery light on with loss of power

Battery light ON means either battery not charging (alternator stopped working) or battery not accepting charge (dead cells in battery-need replacing).

However, your power steering ALSO works on a belt system. Check the alternator belt and the power steering belt. They may be the same one, or they may be separate.

Hope this helps.

Dec 18, 2009 | 1996 Saturn SL

2 Answers

No electrics working

Could be the new battery is dead, from something in the vehicle draining it.charge up the battery and see what happens.Also could be the alternator is not charging the battery while vehicle is running.

Jan 27, 2009 | 1993 Toyota Previa

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