how to replace the fuel injectors on 1991 GMC S15 Jimmy

what would i have to do to get to and replace the fuel injectors on a 4.3L V6 Vortec engine? its a model 220 throttle body injection. a detailed answer would great.

Asked by for the 1991 GMC S15 Jimmy
1 answer
the spider assembly is under the upper intake. that is the plastic unit that the throttle body is mounted on. you must remove the upper intake to gain acess to the spider, or innjector assembly.