Start up noise

[Gunner2020]

My 2015 GMC Sierra 2500hd is making a bad noise on the first 5 seconds of start up. it lasts a few seconds longer on real cold days. It’s got the 6.0 gas motor. Anyone have this problem? Is the starter getting stuck?

[steelerdude15]

Can you try to record it and share it with us? Also, how many miles do you have on your truck?

[Gunner2020]

On 1/18/2022 at 9:00 AM, Gunner2020 said:

My 2015 GMC Sierra 2500hd is making a bad noise on the first 5 seconds of start up. it lasts a few seconds longer on real cold days. It’s got the 6.0 gas motor. Anyone have this problem? Is the starter getting stuck?

It says a ten second video is to long idk. 85000 miles

[scralatchtica824]

5 hours ago, Gunner2020 said:

It says a ten second video is to long idk. 85000 miles

Upload it to YouTube and post the link

[M1ck3y]

If it happens only on cold days I would say its probably your oil pump that your hearing. My 2010 5.3 would do that when around -20 or so. For me it was a, "screeetch" noise; thats the pump being starved of oil until things get moving. Castrol Edge made it significantly worse even though it's supposed to be rated for cold weather. 

 

For the longest time I thought it was my engine, made me cringe every time I heard it..