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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 323 (Data Communication System - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC U1653: Chassis Systems High Speed Communication Enable Circuit >> Diagnostic Fault Information

Diagnostic Fault Information

WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.
Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
Serial Data Communication Enable U2099 U0100-U02FF, U1653 1 -
Chassis High Speed GMLAN Serial Data (+)
or High Speed GMLAN Serial Data (+) (2)		 U0077 U0100-U02FF, U1653 U0077 -
Chassis High Speed GMLAN Serial Data (-)
or High Speed GMLAN Serial Data (-) (2)		 U0077 U0100-U02FF, U1653 U0077 -
1. Battery drain condition may occur.
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