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Home >> Chevrolet >> 1994 >> Forward Control 7.4 N >> Repair and Diagnosis >> Engine Performance >> Remove, Overhaul & Install >> Engine Controls - Remove/Install/Overhaul >> Powertrain Control Module (Pcm) >> Programmable Read-Only Memory (Prom) >> Removal
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Programmable Read-Only Memory (Prom): Removal

  1. Remove PCM from vehicle. See REMOVAL under CONTROL UNIT . Position PCM so bottom cover is facing upward. Remove slide-off PROM access cover by depressing locking tab.
  2. Using PROM removal tool, grasp PROM at narrow ends. Gently rock PROM from end to end while pulling up. If installing new PROM, remove old PROM from PROM carrier.
NOTE: Note reference notch locations in PROM, carrier and PCM for reassembly reference.
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