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Grind Noise At Morning Startup

Mazer18

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Mazer18 Enthusiast

Mazer18

Posted
Posted

Anybody ever noticed a noise that sounds about like a quick grind at startup, first thing in the morning?

 

For me, it only occurs around this time of year when it is in the teens in the early morning. At startup, you turn the key and the engine cranks and surges like normal. However, just a split second before it starts it makes a "quick grind noise" (think of a big zipper being zipped real fast :D ), coming from under the hood as far as I can tell. The engine runs fine though and I don't hear anything else unusual other than that.

 

This doesn't happen at all outside of the winter months and once the truck has had its initial start for the day, I don't hear the noise the rest of the day's startups again until the next morning.

 

Anybody else experience this or have any idea what may be causing this and if it's something of concern?

 

 

Tried a search but couldn't find anything related. If this has been covered, I apologize.

grimmysnr Enthusiast

grimmysnr

Posted
Posted

Had that in my 2006 Sierra, 2007 Impala, and now 2010 Sierra 2500HD. Its the starter just not disengaging. Never had any type of failure or anything and it only does it at first cold startup.

jdewolfe Enthusiast

jdewolfe

Posted
Posted

Pretty sure I have noticed it on anything around 98 or newer. Never had an issue related to it though. Definitely only have heard it in the cold though.

bartonjude Enthusiast

bartonjude

Posted
Posted

I have it too, usually under 40 degree temps. Mine does not sound like the starter though, sounds like its coming from the top of the engine, but not a lifter.

arwriter Enthusiast

arwriter

Posted
Posted

I have the same issue as the original poster, except it has occurred in warmer temperatures, not just when it is cold (although it occurs more often whe it is cold). Due to the occurrence in warmer temperatures, should I be concerned that the starter is beginning to fail and should I go ahead and replace it? Advice would be appreciated. Thanks.

Crazy Canuck Enthusiast

Crazy Canuck

Posted
Posted

I have the same 'grinding' noise as well but I am not sure if we are all hearing the same noise. Mine happens when it is pretty cold (like the -24C start this morning). On my truck it is the power steering pump being starved for fluid (thick when cold) for the first second or two. I had power steering pump problems on a previous vehicle (Jeep GC) and know exactly what they sound like. That said, it will allegedly not do any damage to the pump but it definately is annoying. If it happens in warmer temps, you may have additional or unrelated issues.

ChevyTech77 Senior Enthusiast

ChevyTech77

Posted
Posted
I have the same 'grinding' noise as well but I am not sure if we are all hearing the same noise. Mine happens when it is pretty cold (like the -24C start this morning). On my truck it is the power steering pump being starved for fluid (thick when cold) for the first second or two. I had power steering pump problems on a previous vehicle (Jeep GC) and know exactly what they sound like. That said, it will allegedly not do any damage to the pump but it definately is annoying. If it happens in warmer temps, you may have additional or unrelated issues.

We have a winner...........

 

If you still think it is the starter, pull the accessory drive belt off before you start it in the morning. :dunno:

 

The power steering fluid can be flushed with the GM Cold Climate fluid or a quality full synthetic like Amsoil.

My '98 has been doing it all it's life and while I SHOULD flush it, it has over 195,000 miles on it like this and

I figure that if the pump was going to die from it, it would have already. Besides, as any tech will tell ya, our

vehicles always seem to come last........lol.

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