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Circuit/System Verification

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
  1. With a master vehicle key, turn the ignition ON.
  2. Observe the security indicator. After approximately 10 minutes, the indicator will turn off.
  3. Turn the ignition OFF and wait 5 seconds.
  4. Repeat steps 2-4 two more times for a total of 3 cycles or 30 minutes.
  5. With a master vehicle key, turn the ignition ON. The start disable will now be cleared.
  6. With a scan tool, clear any DTCs.
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