Why does my 2001 Cheve Silverado 5.3 L make a knocking sound when started cold and then go away after it runs a minute or if it is driven a minute. The sound seems to come from the bottom of the motor or the tranny area and has been there since i bought the vehicle. It doesn't seem to be getting worse and someone suggested piston slap as the problem. Any ideas ?

Asked by Ratherfluffy Aug 15, 2013 at 03:27 PM about the 2001 Chevrolet Silverado 1500 LS Extended Cab 4WD

Question type: Maintenance & Repair

The fluids are good and the tranny is rebuilt too.

migration_judge_roy answered 11 years ago

a leaking fuel injector can dump gas....check the oil in your crankcase for evidence of fuel there...examine your injectors for leakage~

1 people found this helpful.

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905

LUVMYCHEVY answered 6 years ago

how many miles are on truck?

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F_O_R answered 6 years ago

Then again this could be a rod knock.

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Guru9BSGB4 answered 3 years ago

Probably the check valve in oil filter, well lack of just taking it longer to prime to top of motor. Was a issue in some early to late 90s trucks.

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Your Answer:

Why does my 2001 Cheve Silverado 5.3 L make a knocking sound when started cold and then go away after it runs a minute or if it is driven a minute. The sound seems to come from the bottom of the motor or the tranny area and has been there since i bought the vehicle. It doesn't seem to be getting worse and someone suggested piston slap as the problem. Any ideas ? 4 Answers

The fluids are good and the tranny is rebuilt too.

2001 Chevrolet Silverado 1500 LS Extended Cab 4WD

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Maintenance & Repair
I have a 2004 Chevy Silverado extended cab, 4.8 liter. I have had multiple issues with this vehicle, but the one I can't seem to solve is this: if I leave the truck sitting for a day, when I get in and start driving, about 5 miles down the road, it acts like it is being starved of fuel. The engine light starts blinking and there is no power even when i step on the gas fully. After a minute or two, it goes away and runs fine unless I let it sit for a couple days. I just replaced my fuel lines because they were rusted out but that didn't solve the problem. Any ideas anyone? 6 Answers

Engine light is always on and blinks on and off when problem occurs.

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my oil pressure went down to 0 and then i turned it off. its a 2001 chevy silverado. I turned it back on and it was fine. Then i started driving and it happened again and this time the engine shut off. Is there a safety feature that prevent the motor from seizing? 9 Answers

I was driving and the oil pressure started to fluctuate from 40 to 0 so i pulled over and shut it off. I then turned it on and it went back to 40. drove off and it happened again so i pulled over and ...

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I have a 2001 Silverado 1500 4.3 v6. I bought it used about a year ago, it throws the code "camshaft to crankshaft position correlation fault" and it has a slight miss that is worse when it's wet out. 4 Answers

I've replaced the ignition module, distributor, cap, rotor, and the crankshaft sensor. I can't figure out the problem. Could someone please help?!?

2001 Chevrolet Silverado 1500 LS RWD

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Maintenance & Repair
Evening: I currently have a 2006 Chevrolet Silverado 1500, 5.3 engine with 113,000 on the clock. Truck has never been abused and runs fine. Question At full operating temp it developed what sounds like a miss or maybe a exhaust leak last year. Local dealer said it was the belt slapping and the belt was changed but this was not the problem now that temps are getting warmer its a bit louder than last year. Its only noticible under load and easier to hear in the cab than under the hood. Seems to me its on the passenger side. All manifold bolt heads are there and I see no sign of leaks in the exhaust system. Any ideas or does anyone know of something I am over looking? Thanks 1 Answer

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my oil pressure went down to 0 and then i turned it off. its a 2001 chevy silverado. I turned it back on and it was fine. Then i started driving and it happened again and this time the engine shut off. Is there a safety feature that prevent the motor from seizing? 9 Answers

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