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Home >> GMC >> 1993 >> Forward Control 7.4 N >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - Transmission >> Self-Diagnostic System >> Pcm/TCM Location
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Pcm/TCM Location

The PCM/TCM is located under the driver's seat riser ("G" Series Van and "P" Series Commercial Van) or behind right side of dash (all other models). On "G" Series Van Motorhome, PCM/TCM has been relocated to behind left side "B" pillar.