How do you know what engine you have?

I was reading on another post in here and they said there are two motors
5.3l 295hp @ 5200 rpm 335lb-ft torque @ 4000 rpm
5.3l ho 310hp @5200 rpm 335 lb-ft torque @ 4000 rpm
How can I tell which one I have.

Thanks inadvance

There is a sticker in the glove box called a SPID label. It will have a bunch of 3 letter alphanumeric codes.

You did not say what year but the Engine Code will start with L

//2000CAYukon

Sorry I have a 2002 GMC Sierra Z-71 5.3L
for the 310 hp it will have an L code?or is that for the 295 hp? And what would that code be?

Thanks I'll have to go check it out.

This is from gm-trucks.com in the RPO section for 2002. This is the list of engines available in 2002.

LM7
Engine Gas, 8 CYL, 5.3L, MFI, Iron, GM

LQ4
Engine Gas, 8 CYC, 6.0L, MFI, Iron, GM

LQ9
Engine Gas, 8 CYC, 6.0L, MFI, Iron, GM, HO

LR4
Engine Gas, 8 Cechy, 4.8L MFI, Iron, GM

LU3
Engine Gas, 6 Cyl, 4.3L, MFI, V6, 90 Deg

L18
Engine Gas, 8 CYL, 8.1L, MFI

L35
Engine Gas, 6 Cyl, 4.3L, CPI, V6, 90 Deg, HO

L59
Engine Flexible Fuel, (Gas/Alc), 8 CYL, 5.3L, MFI, V8, GM

The GM website only goes back to 2004; however, the LM7 did come with 295 HP in 2002. Looking at the current (2007) 5.3 engines, the L33 has 310 HP.

//2000CAYukon