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Home >> Chevrolet >> 2002 >> C3500 HD 6.5 F, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 69 (Automatic Transmission Diagnosis - 4L80-E (Gasoline)) >> Self-Diagnostic System >> Diagnostic System Check >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2002 GMC Cab & Chassis Sierra and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The diagnostic system check is an organized approach to identify a condition created by the automatic transmission. The diagnostic system check is the diagnostic starting point for a automatic transmission complaint. The diagnostic system check directs you to the next logical step for diagnosing a transmission concern. Perform this check only if there is a driveability complaint or if you have been directed here from another service information section.

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