Symptoms - Cruise Control: Notes

2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Notes
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:

The following steps must be completed before using the symptom tables.

  1. Before using the symptom diagnostic table, perform the Diagnostic System Check - Vehicle (with HP2) , Diagnostic System Check - Vehicle (without HP2) , in order to verify the following conditions:
    • There are no DTCs set.
    • The module can communicate via the serial data link.
  2. Review the system operation in order to understand the system functions. Refer to Cruise Control Description and OperationΒ .
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.