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take the 3 nuts off the flange and the bolt out also then take the intake hose off with a flat screwdriver then take the nuts off the manifold slip out the old gasket and if clean then slip in the new one if not clean then use some carb cleaner and clean it before you insert the new one then work backwords and tighten everything up but make sure when you put the intake hose back on make sure the sensors are put back into it before you start your engine when it is all done then take off the neg side of the battery wait ten min then put back on

(only if you have check engine light on before you change the gasket)

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Q: How do you change exhaust manifold gasket in 2003 trailblazer?
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