You can either replace the tbi unit or the injectors, they are ontop of the tbi unit. Take teh air cleaner off to reach them. If you have a the L35 vortec then they are under the top of the intake an dit's replaced as a unit. It's called a spider web, you'll need to know your engine code from the vin number.
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Tuesday, February 1st, 2011 AT 12:10 AM