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.
IMPORTANT:
The engine coolant temperature (ECT) sensor must be between 10-32°C (50-90°F) for an accurate measurement.
Measure for 11-14 ohms of resistance between the terminals of the fuel injector.
- If the resistance is not within the specified range, replace the fuel injector.