Had to jump off my truck it won't stay running unless I keep my foot on the gas pedal. Voltage gauge won't get above 12

30

Asked by Oct 12, 2014 at 01:14 AM about the 2004 Chevrolet Silverado 1500 Z71 Crew Cab Short Bed 4WD

Question type: Maintenance & Repair

19 Answers

32,015

Alternator. Your alternator is miss behaving. Change up the battery real good first if you have to use the Chevy to pick up a replacement. Let me know if you have a Advanced Auto Parts Store near you.

17,440

Ditto what mark said! Charge up the battery.

30

I do have an advanced auto nearby. I charged the battery but the truck engine dies as soon as I let off the gas. It will not idle at all. I bought the battery in March 2014. So, its the altenator??

1 out of 1 people think this is helpful.
17,440

So its cranking right up then or do you have to jump it every time? How long are you letting the truck run before removing your foot from the gas peddle?

1 out of 1 people think this is helpful.
30

Yes, it cranks up now. I drove it 14 miles to get it home. (Never letting off the gas), got it in the yard. It will still crank, but a have to keep it accelerated or it will die. The voltage meter will not get above 12.

2 out of 2 people think this is helpful.
30

Yes, it cranks up now. I drove it 14 miles to get it home. (Never letting off the gas), got it in the yard. It will still crank, but a have to keep it accelerated or it will die. The voltage guage will not get above 12.

17,440

Ok, any check engine lights on in the dash?

30

No check engine lights on.

17,440

Hhhhmmmmmm....... I would go have the alternator checked and make sure the gauge in the truck is correct. That will either find your problem or eliminate it.

30

Thank you so much. One other thing is happening. I just went out and cranked the truck again. My interior lights come on, no problem, then they get super bright. Any significance there??

17,440

Sounds like the voltage regulator in the alternator. Let us know what happens after you get it looked at.

30

Thanks and will do!!

32,015

Donna. I sure it's the alternator so here's how to save some money. Google Advanced Auto Parts coupons. You can save big.

30

Thanks guys!! You were right, of course. A new altenator was all my truck needed!! Im back on the road. Thanks again.

17,440

Glad that's all it was. That is normal maintenance on a 11 year old vehicle.

1 out of 1 people think this is helpful.
Best Answer
10

I'm having the same problem. I changed the alternator, bought a new battery, changed the oil and it is still doing the same thing. What could be the problem, any suggestions?

10

Forgot to mention, I have a 2003 Chevy Tahoe Z71

17,440

Throttle position sensor, throttle plate(butterfly) if it's dirty clean it with carb cleaner, fuel pressure regulator. When is the last time it had spark plugs and wires put on? They those things if you already got a new battery and alternator.

Hey. I have a 1995 Chevy Silverado. I'm have the same problem. My truck will start and run if I give it throttle. We replaced the egr and the maps sensor and temp sensor. They all helped but the problem is still there.

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