shouldnt have to drain the oil before you pull the head, but definitely change it soon after you get it all back together, and you have a timing belt, you should be able to remove the timing belt cover and there is a timing belt tension device, just move the tension device to relive the tension on the belt and its off. i have the la1 and i had to change my heads, i did it in 8 hours in a advanced auto parking lot in Florida, just invest in a good torque wrench, and clean the head and block mating surfaces really good
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2001 ALERO GL SED 4 DR--Build Date: 08-16-2000. There are 17 2001 ALERO GL 4 DR vehicles (0.019%) matching my exact options list.
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