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.

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HOMESERVICE MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1103 (DATA COMMUNICATION SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC U0100 - U0299DTC DESCRIPTORS

2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2

DTC Descriptors

2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION DTC Descriptors

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

DTC U0100-U0299: Lost Communication With Module
DTC U0100 00: Lost Communication With Engine/Powertrain Control Module (ECM/PCM)
DTC U0101 00: Lost Communication With Transmission Control Module (TCM)
DTC U0102 00: Lost Communication With Transfer Case Control Module
DTC U0104 00: Lost Communication With Cruise Control Module
DTC U0106 00: Lost Communication With Glow Plug Control Module
DTC U0109 00: Lost Communication With Fuel Pump Control Module
DTC U0121 00: Lost Communication With Anti-Lock Brake System (ABS) Control Module
DTC U0122 00: Lost Communication With Vehicle Dynamics Control Module
DTC U0132 00: Lost Communication With Suspension Control Module
DTC U0137 00: Lost Communication With Trailer Brake Control Module
DTC U0140 00: Lost Communication With Body Control Module
DTC U0141 00: Lost Communication With Body Control Module - A
DTC U0151 00: Lost Communication With Vehicle Restraint Control Module
DTC U0155 00: Lost Communication With Instrument Panel Cluster (IPC) Control Module
DTC U0159 00: Lost Communication With Park Assist Control Module
DTC U0160 00: Lost Communication With Audible Alert Control Module
DTC U0164 00: Lost Communication With HVAC Control Module
DTC U0165 00: Lost Communication With HVAC Control Module - Rear
DTC U0168 00: Lost Communication With Security Control Module
DTC U0170 00: Lost Communication With Restraint System Sensor A (Passenger Presence System)
DTC U0172 00: Lost Communication With Restraint System Sensor C (Rollover Sensor)
DTC U0184 00: Lost Communication With Radio
DTC U0186 00: Lost Communication With Audio Amplifier
DTC U0198 00: Lost Communication With Telematic Control Module
DTC U0199 00: Lost Communication With Door Control Module A
DTC U0200 00: Lost Communication With Door Control Module B
DTC U0214 00: Lost Communication With Remote Function Actuator (RFA)
DTC U0241 00: Lost Communication With Headlamp Control Module A
DTC U0249 00: Lost Communication With Entertainment Control Module - Rear B

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:

• 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.