Diagnostic Fault Information

2008 Chevrolet HHR LT, 2.4 P, AutomaticSECTION Diagnostic Fault Information
WARNING: This page is about a different car, the 2008 Pontiac G5 and 2008 Chevrolet Cobalt. 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
Brake Booster Vacuum 5-Volt Reference Circuit C1100 00 C1100 00 C1100 00, 01 -
Signal Circuit C1100 00, 02 C1100 00 C1100 00,01 C1100 09, 08
Low Reference Circuit - C1100 00 - -
RENDER: 1.0x

NO RELATED

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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.