aside from the 2 visible clamp, what hold the interior engine cover?
In addition to the clamps, there are two hard to reach bolts on each side of the top of the cover. For some advice from other Astro owners, you can check out http://www.faqfarm.com/Q/On_a_Chevy_Astro_Van_how_do_you_remove_the_engine_cover_to_change_plugs
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