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2015 Silverado 5.3, engine failure at 482 miles

sjgi48

By sjgi48
in Troubleshooting & Recalls

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sjgi48 Enthusiast

sjgi48

Posted
Posted

Just bought a 2015 Silverado with the 5.3 V8. Driving home today it made a shuddering thud noise and instantly lost 80% of its power (it kept running and would move the truck at about 10mph but that was it) Engine was making a loud noise, consistent with engine RPM tat sounded like it was coming from the intake. Check engine light did not com on until after I shut the engine off. Engine will restart but sounds horrible. No metal shavings in oil, smoke or other outward signs of major failure.

 

Any hot ideas?

 

Local dealer can't look at it until Monday, wife and I have to be at work Monday so now I am looking at having to buy expensive airline tickets to get home instead of driving the new truck. To say I am not pleased with the situation would be putting it mildly.

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crewl1 Enthusiast

crewl1

Posted
Posted

Are all the spark plug cables attached? I have heard there is a tendency to have them detach.

14 Silverado Enthusiast

14 Silverado

Posted
Posted

My first 14 did exact same thing had to shut it down for awhile then would drive fine for awhile then it happened again. It was a Friday when it happened roadside towed it to dealer they looked at it Monday ended up being the unwanted shift into neutral. Dealer reprogrammed it ran fine but few months later other issues couldn't get fixed so dealer bought it back and put me in a different truck.

sjgi48 Enthusiast

sjgi48

Posted
  • Author
Posted

Plug wires are all attached. Engine will start but it takes a bit of cranking and the sounds like something is trying to pound its way out through the heads or intake. Metallic clunking noise is directly tied to engine RPM.

 

Anyway it has been towed to a local dealer who will look at it tomorrow.

j-ten-ner Senior Enthusiast

j-ten-ner

Posted
Posted

Just bought a 2015 Silverado with the 5.3 V8.....having to buy expensive airline tickets to get home instead of driving the new truck....

 

I thought "roadside assistant" is standard for a new truck.

As is a 6 month trial for OnStar.

 

Just curious.

 

so long

j-ten-ner

sjgi48 Enthusiast

sjgi48

Posted
  • Author
Posted

Prelimiary report from local dealer yesterday was a crank and camshaft failure (apparenlty these were among the codes that the computer showed). At any rate engine is toast. Dealer said they will not tear it down to find out what actually happened as GM usually wants such failed parts returned untouched so that the quality control folks at the factory can figure out what happened.

 

Should know more Monday, but looks like it will get a replacement engine.

 

As to the need for transportation home, purchase point was Santa Fe New Mexico, failure point was Boulder Colorado, home is near St Joseph Missouri. Ended up spending $400 for a rental car and driving home today.

20L8TSierra24 Senior Enthusiast

20L8TSierra24

Posted
Posted

Wow. Sorry to hear. Usually if something mechanical is going to fail it does within the first 1k. Hope everything works out in the end.

 

Sent from my SM-G920V using Tapatalk

crewl1 Enthusiast

crewl1

Posted
Posted

Prelimiary report from local dealer yesterday was a crank and camshaft failure (apparenlty these were among the codes that the computer showed). At any rate engine is toast. Dealer said they will not tear it down to find out what actually happened as GM usually wants such failed parts returned untouched so that the quality control folks at the factory can figure out what happened.

 

Should know more Monday, but looks like it will get a replacement engine.

 

As to the need for transportation home, purchase point was Santa Fe New Mexico, failure point was Boulder Colorado, home is near St Joseph Missouri. Ended up spending $400 for a rental car and driving home today.

Yikes that is tough, sorry to hear. Hope all works out in the end.

pm26 Senior Enthusiast

pm26

Posted
Posted

Prelimiary report from local dealer yesterday was a crank and camshaft failure (apparenlty these were among the codes that the computer showed). At any rate engine is toast. Dealer said they will not tear it down to find out what actually happened as GM usually wants such failed parts returned untouched so that the quality control folks at the factory can figure out what happened.

 

Should know more Monday, but looks like it will get a replacement engine.

 

As to the need for transportation home, purchase point was Santa Fe New Mexico, failure point was Boulder Colorado, home is near St Joseph Missouri. Ended up spending $400 for a rental car and driving home today.

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