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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 11 (Wiring Systems And Power Management - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> Retained Accessory Power Malfunction >> Diagnostic Fault Information

Diagnostic Fault Information

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
RAP Relay Coil Supply Voltage B1475, 1 1 2 -
Battery Positive Voltage (Relay Output) 4 4 - -
Accessory Voltage (Relay Output) 1 3 2 -
Ground (RAP Relay) - 1 - -
  1. All relay controlled RAP functions inoperative.
  2. Relay RAP remains on past the timer limit after key out and will not turn off when a vehicle door is opened.
  3. Partial relay controlled RAP functions inoperative with open fuse.
  4. Multiple vehicle functions will not operate.
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