Looking into trading in my 2002 Sierra Z71 for a 2005.I want to know if anybody knows if the 05's are slappers like the former 5.3's.My 02 5.3 is a good one at 103,000 k's,still running strong and healthy.I guess this is a good one as no sound comes out of it cold or hot.

 

i think they fixed the problem in 03. o5 should be fine

 

The 05 is good to go. My 04 slapped like crazy until it warmed up.

 

My 01 was a slapper and a tapper, piston slap when cold, one or two lifters banging away when hot.

The '05 I just picked up sounds like a northstar, not a sound cold or hot.

 

I bet the 05 will slap too with a little miles on em. My 04 didnt start till about 8k.

 

Mine seems quiet, but it still has less than 1000 miles on it. I hope it doesn't slap as it gets older.

 

Thanks guys.I guess I will have to make up my mind.My 02 purrs like a kitten,not one noise out of it.I'm interested in the 05 because of better HP.Dealership told me 330 verses 295 for the 02.Anybody with the 05,how is the gas milage?

 

600 miles and no slap

My 03 was dead quiet

 

310hp w the L33, 295hp w/ LM7, TQ is the same for both motors as far as I have heard. I am avg'n 17.5 city driving and 20.5 highway. I have 500 miles on it now. I really wish I had found one with 4.10's, but the gas milage is good with the 3.42s. I hope this helps

 

mine ticks...