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 MANUALSCHEVROLET2018SILVERADO 2500 HD WT, 2D PICKUP, 6.0L ENG VIN G, RWD, GASREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 352 (DATA LINK COMMUNICATION SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC U1881 TO U1899: STARTER/GENERATOR CONTROL MODULE LOST COMMUNICATION WITH ENGINE CONTROL MODULE (ECM)/POWERTRAIN CONTROL MODULE (PCM)DTC DESCRIPTORS
2018 Chevrolet Silverado 2500 HD WT, 2D Pickup, 6.0L Eng VIN G, RWD, Gas
DTC Descriptors
2018 Chevrolet Silverado 2500 HD WT, 2D Pickup, 6.0L Eng VIN G, RWD, GasSECTION DTC Descriptors
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
This diagnostic procedure supports the following DTCs:
- DTC U1881 Electro-Hydraulic Power Steering (EHPS) Module Lost Communication With Energy Storage Control Module (ESCM)
- DTC U1882 Energy Storage Control Module (ESCM) Lost Communication With Electro-Hydraulic Power Steering (EHPS) Module
- DTC U1883 Hybrid Control Module (HCM) Lost Communication With Driver Door Module (DDM)
- DTC U1884 Hybrid Control Module (HCM) Lost Communication With Passenger Door Module (PDM)
- DTC U1885 Energy Storage Control Module (ESCM) Lost Communication With Hybrid Control Module (HCM)
- DTC U1886 Energy Storage Control Module (ESCM) Lost Communication With Powertrain Control Module (PCM)
- DTC U1887 Energy Storage Control Module (ESCM) Lost Communication With Starter/Generator Control Module (SGCM)
- DTC U1888 Hybrid Control Module (HCM) Lost Communication With Energy Storage Control Module (ESCM)
- DTC U1889 Hybrid Control Module (HCM) Lost Communication With Body Control Module (BCM)
- DTC U1890 Hybrid Control Module (HCM) Lost Communication With HVAC Control Module
- DTC U1891 Hybrid Control Module (HCM) Lost Communication With Instrument Panel Cluster (IPC)
- DTC U1892 Hybrid Control Module (HCM) Lost Communication With Electro-Hydraulic Power Steering (EHPS) Module
- DTC U1893 Hybrid Control Module (HCM) Lost Communication With Powertrain Control Module (PCM)
- DTC U1894 Hybrid Control Module (HCM) Lost Communication With Starter/Generator Control Module (SGCM)
- DTC U1895 Electro-Hydraulic Power Steering (EHPS) Module Lost Communication With Powertrain Control Module (PCM)
- DTC U1896 Electro-Hydraulic Power Steering (EHPS) Module Lost Communication With Starter/Generator Control Module (SGCM)
- DTC U1897 Starter/Generator Control Module (SGCM) Lost Communication With Energy Storage Control Module (ESCM)
- DTC U1898 Starter/Generator Control Module (SGCM) Lost Communication With Hybrid Control Module (HCM)
- DTC U1899 Starter/Generator Control Module (SGCM) Lost Communication With Powertrain Control Module (PCM)
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.