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Home >> Chevrolet >> 2009 >> Suburban K2500 >> Repair and Diagnosis >> Engine Performance >> System >> Data Communication System >> Diagnostic Information and Procedures >> DTC U1888 >> Diagnostic Fault Information
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Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Drive Motor Generator Battery Control Module B+ Voltage U1888, U1878, U1875, U1862, U1821, U1812, U0129, *U0111 U1888, U1878, U1875, *U0111 - -
Drive Motor Generator Battery Control Module Serial Data Communication Enable U1888, U1878, U1875, *U209A U1888, U1878, U1875, *U0111 - -
High Speed GMLAN Serial Data Bus + **U1888 U1888, U1878, U1875, U0129, *U0111 **U1888 -
High Speed GMLAN Serial Data Bus - **U1888 U1888, U1878, U1875, U0129, *U0121, *U0111 **U1888 -
Drive Motor Generator Battery Control Module Ground - U1888, U1878, U1875, *U0111 - -
HPCM Ignition (circuit 2139) P2534 P2534 U1888, *B1453 -
* Sets in the SDG module
** No scan tool communication with hard fault. Additionl DTCs are set