What the guys are saying about using 5W30 in winter in this engine is right.
The 5W30 you read off the oil filler cap is what GM recommends year round.
I have the 5.3L in my 2002 Tahoe 4x4 (130k miles) and the lifters are noisy on the initial start up (lasts maybe 45 secs) but only during the cold months. (Up here in Ontario that can last 5 months)
In the spring I switch to 10W30 for the rest of the year as I tow a travel trailer down to South Carolina and sometimes to Florida. (Can’t afford to store the tt there or stay all winter, darn it)