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Escalade EXT
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DTC U2099
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Diagnostic Fault Information
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Diagnostic Fault Information
Circuit
Short to Ground
Open/High Resistance
Short to Voltage
Signal Performance
High Speed GMLAN Serial Data Wake Up
U2099, U0100-U0299 *
U0100-U0299
U0100-U0299 **
-
* Vehicle will not start.
** History only. If cleared the DTC will return after several ignition cycles.