How do you reset PCM? Erase prior codes

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May 6, 2005 | 04:01 PM

ponchoWS6

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Staging Lane

Joined: Aug 2004

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From: Humble,TX.

How do you reset PCM? Erase prior codes

Tripped a code last week and wanted to reset my pcm.

May 6, 2005 | 04:13 PM

SS SLP2

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From: SILSBEE TX

RESET SERVICE ENG LITE
& CLEAR CODES

F BODY LS1

1. Turn key on but don't start car.
2. Pull PCM BAT and PCM IGN fuses in engine compartment.
3. Wait a few minutes.
4. Turn ignition off.
5. Replace fuses.

------------------------------
RESET SEV ENG LITE & CLEAR CODES
5.3 TRUCKS

1. Turn key on but don't start car.
2. Pull ECM 1- ENG 1-ECMB fuses in engine compartment.
3. Wait a few minutes.
4. Turn ignition off.
5. Replace fuses.

AFTER RESET ENG MAY TAKE A FEW MINUTES TO RELEARN IDLE AND TIMMING CURVE