Is one of them 2wd or 4wd? That would explain the different filters.jebx said:4.8, 5.3, 6.0 all take 6 quarts. Verify the oil filter, my dad's '03 sierra 4.8 takes a different one than my '01 chevy 4.8.
On the NBS the 2wd and 4wd of the same year take the same filter. For 2003 GM switched to a shorter filter. Thats my experience with them.Whifflebat said:Is one of them 2wd or 4wd? That would explain the different filters.
Whifflebat said:Is one of them 2wd or 4wd? That would explain the different filters.
slowsierra93 said:On the NBS the 2wd and 4wd of the same year take the same filter. For 2003 GM switched to a shorter filter. Thats my experience with them.