Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2011 Cadillac Escalade EXTFACTORY OEM SERVICE PROCEDURE
Section 794 (Data Communication System)
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Schematic and Routing Diagrams
- Component Locator
- Visual Identification
- Data Communication Connectors
- Auxiliary Body Control Module (XBCM) C1 (Export)
- Auxiliary Body Control Module (XBCM) C2 (Export)
- Body Control Module (BCM) C1
- Body Control Module (BCM) C2
- Body Control Module (BCM) C3
- Body Control Module (BCM) C4
- Body Control Module (BCM) C5
- Body Control Module (BCM) C6
- Body Control Module (BCM) C7
- Data Link Connector (DLC)
- GMLAN Terminator
- Data Communication Connectors
- Diagnostic Information and Procedures
- Diagnostic Code Index
- Diagnostic Starting Point - Data Communications
- DTC B1000
- DTC B1001
- DTC U0073
- DTC U0100 - U0299
- DTC U1814
- DTC U2099
- DTC U2100
- DTC U2105-U2199
- Symptoms - Data Communications
- Scan Tool Does Not Power Up
- Scan Tool Does Not Communicate with High Speed GMLAN Device
- Scan Tool Does Not Communicate with Low Speed GMLAN Device
- Data Link References
- Repair Instructions
- Description and Operation
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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