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Home >> GMC >> 1987 >> Jimmy 6.2 C >> Repair and Diagnosis (Single Page) >> Engine Performance >> Remove, Overhaul & Install >> CCC Components Removal & Installation >> Removal & Installation >> Programmable Read Only Memory (Prom)(Except 2.5L) >> Removal

Programmable Read Only Memory (Prom)(Except 2.5L): Removal

  1. Remove ECM from vehicle as previously outlined. Remove access cover. Note location of reference notch in PROM and ECM for reassembly reference. Engage end of PROM carrier with hook end of rocker-type PROM removal tool. Press on vertical bar end of tool and rock engaged end of PROM carrier up as far as possible.
  2. Engage opposite end of PROM carrier in the same manner and rock this end up as far as possible. Repeat process until PROM carrier and PROM are free of PROM socket. PROM carrier and PROM should lift off of PROM socket easily.
NOTE: PROM carrier should ONLY be removed with special PROM removal tool. Use of any other method may damage PROM or PROM socket.