Component Testing
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.
C0299 00
- Ignition OFF, disconnect the harness connector at the power brake booster actuator.
- Test for infinite ohms of resistance between the actuator terminal 1 and ground.
- If less than infinite ohms, replace the vacuum brake booster assembly.
- Test for 2-3 ohms of resistance between terminals 1 and 5 at the power brake booster actuator.
- If the test is infinite resistance, replace the vacuum brake booster assembly.