knocking while cold

[allenpsu]

I have a 96 chevy Tahoe with 156,000 miles. It has been pretty cold the last few mornings and I have noticed a knocking after starting the vehicle which goes away after reaching operating temp. I have noticed this on other chevy's I have owned all of them being a lot newer than this Tahoe. My 04 Silverado starting knocking in the cold after only about 50,000 miles. I am just wondering if this is something major or something that is just prone to Chevy's. Thank you.

 

[lesterl]

Could be several things, is it a bottom end knock or a top end knock?

 

[2door2wheel]

its prob piston slap from the number 7 cly. most vortecs over 100k have it i drove my truck 90k like that with no issue. if it doesnt stop after warmup then i would worry

 

[lesterl]

The 5.3l was prone as the skirts were short on the pistons....

My 5.7l has 300k and only gets noisy on Cold start at the end of the oils life....