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Home >> GMC >> 1991 >> Value Van 7.4 N >> Repair and Diagnosis >> External Pages >> Different car >> Section 47 (Engine Controls - Tests W/Codes - 5.9L Diesel) >> Self-Diagnostic System >> Diagnostic Procedures

Diagnostic Procedures

WARNING: This page is about a different car, the 1995 Dodge Pickup and 1995 Dodge Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: When using diagnostic tests, DO NOT skip any steps in test procedure, or incorrect diagnosis may result.

To obtain DTCs, see ENTERING ON-BOARD DIAGNOSTICS  . If DTCs are not present and/or using Diagnostic Readout Box (DRB) or generic scan tool, proceed to one of following tests.