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Home >> GMC >> 1987 >> Forward Control 7.4 W, Automatic, 400/M40 >> Repair and Diagnosis >> External Pages >> Different car >> Section 20 (Engine Controls - System/Component Tests - Gasoline) >> Computerized Engine Controls >> Control Unit >> Notes

Control Unit: Notes

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 1994 GMC Vandura Special, 1994 GMC Vandura, 1994 GMC Rally Camper Special, 1994 GMC Rally, and 1994 GMC Forward Control. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: To perform the following ground and power tests, use appropriate wiring diagram at the end of this article.