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Home >> GMC >> 1995 >> Forward Control 7.4 N >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Engine Controls - Remove/Install/Overhaul - 4.3L) >> Powertrain Control Module (Pcm) >> Programmable Read-Only Memory (Prom) >> Removal

Programmable Read-Only Memory (Prom): Removal

WARNING: This page is about a different variant/trim than selected.
  1. Remove PCM from vehicle. See REMOVAL under CONTROL MODULE . 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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