Skip the auto shop - Our mechanics make house calls

Q: would not stay started

asked by on

I just bought a Sierra 1500 SLE 2wd. I purchased the demo from the dealer with about 4600 miles on it, and it now has 6500 miles on it. I got in the truck and it started just fine, but it wouldn't stay started. It would start up just fine but the speed would slowly become less and less. The truck would vibrate badly and the speed was bouncing around. Then it died in about 25 seconds. There were no warning lights of any kind. I could start the truck, but then the same process would repeat itself. I tried starting it 30 more times. Then I had it towed to GMC. When I went to pick up my truck it stayed started and was running. Do you know what could have caused this problem with my GMC?

A: Hello. Most of the time this is caused by a...

Hello. Most of the time this is caused by a voltage issue. If the battery was low or if there was a bad connection at the battery then this can occur. More than likely they charged the battery and checked the connections and that took care of it. The dealer should have told you what it took to fix it. If you continue to have this problem, a certified mobile mechanic from YourMechanic can visit your home or office to inspect why your truck is shutting off.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: very low power in 2nd gear engine knocking noise

If the knocking noise happens while you feel like the vehicle is chugging, this could be a misfire. Misfires are ore likely to happen when the engine is under a load, like during acceleration. Usually a misfire will cause the...

Q: My car vibrates between 50-60 mph

A vibration while driving is generally caused by something that rotates with vehicle speed. A number of components can be the cause. An out of balance tire or tires, as well as an out of round tire (shifted belt) or...

Q: Won't shift out of second gear - 2000 GMC Sierra 2500

Hello. This definitely sounds like an electronic transmission control issue. It could be something as simple as a transmission range selection switch or something as serious as a transmission valve body. You may want to consult with a transmission shop...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.