Circuit/System Verification

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2017 GMC Sierra 3500 HD, 2017 GMC Sierra 2500 HD, 2017 GMC Sierra 1500, 2017 Chevrolet Silverado 3500 HD, and 2017 Chevrolet Silverado 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

If the condition is intermittent or cannot be duplicated, disconnect the connectors and add Nyogel lubricant 760G. This procedure will correct the high resistance condition due to terminal fretting corrosion.

Verify P17 Info Display Module displays infotainment system information properly.
- If infotainment system information does not display properly
  Refer to Radio Information Display Malfunction (IOB) .
- If infotainment system information displays properly
Verify there is no debris on the B87 Rearview Camera lens and that the bezel and bezel seal are not damaged.
- If debris is found on the lens
  Clean the lens. If the lens, bezel, or bezel seal are damaged, replace as necessary.
- If there is no debris on the lens
Engine running, transmission in R.
Verify the backup lamps are illuminated.
- If the backup lamps are not illuminated
  Refer to Backup Lamps Malfunction (Manual Transmission)Backup Lamps Malfunction (Automatic Transmission) .
- If the backup lamps are illuminated
Engine running, transmission in R.
Verify a clear rear vision image is displayed on the P17 Info Display Module.
- If a clear image is not displayed
  Refer to Circuit/System Testing.
- If a clear image is displayed
All OK.