Solstice 2006-2008, Sky 2007-2008

2.4L L4 VIN B Auto 10

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Trouble Code: U1088



No Communication With SDM (Restraint Module)

Possible Causes:



SDM Class 2 circuit is open, shorted to ground or to B+
 
SDM ignition power circuit has a high resistance condition
 
SDM main ground circuit(s) has a high resistance condition
 
SDM (module) may have failed and is pulling the circuit low
 

Trouble Code: U1092



Loss of VTD (Pass Lock) Communication

Possible Causes:



Check for a loose connection at the VTD module
 
Test the main power and ground circuits to the VTD module
 
Check the Class 2 serial data circuit to the VTD module
 
VTD module may have failed
 

Trouble Code: U1096



No Communication With Instrument Panel Cluster

Possible Causes:



IPC Class 2 circuit is open, shorted to ground or to B+
 
IPC ignition power circuit has a high resistance condition
 
IPC main ground circuit(s) has a high resistance condition
 
IPC (module) may have failed and is pulling the circuit low
 

Trouble Code: U1097



No Communication With Driver Information Center

Possible Causes:



DIC Class 2 circuit is open, shorted to ground or to B+
 
DIC ignition power circuit has a high resistance condition
 
DIC main ground circuit(s) has a high resistance condition
 
DIC (module) may have failed and is pulling the circuit low
 

Trouble Code: U1151



No Communication With Vehicle Interface Unit

Possible Causes:



VIU Class 2 circuit is open, shorted to ground or to B+
 
VIU ignition power circuit has a high resistance condition
 
VIU main ground circuit(s) has a high resistance condition
 
VIU (module) may have failed and is pulling the circuit low
 

Trouble Code: U1152



No Communication With HVAC Control Module

Possible Causes:



HVAC Class 2 circuit is open, shorted to ground or to B+
 
HVAC ignition power circuit has a high resistance condition
 
HVAC main ground circuit(s) has a high resistance condition
 
HVAC (module) may have failed and is pulling the circuit low
 

Trouble Code: U1193



Loss of Vehicle Immobilizer Module Communications

Possible Causes:



Test the main power and ground circuits to the VIM module for a loose connection
 
Check the Class 2 serial data circuit to the VIM module
 
VTD module may have failed
 

Trouble Code: U1255



Class 2 Communications Malfunction

Possible Causes:



Class 2 circuit is open, shorted to ground or shorted to power
 
ECM ignition power circuit(s) has a high resistance condition
 
ECM main ground circuit(s) has a high resistance condition
 

Trouble Code: U1300



Class 2 Circuit Short to Ground

Possible Causes:



Class 2 serial data line was in a low state for 3 seconds due to a short to sensor ground or chassis ground
 
One or more modules on the Class 2 line has a short to ground
 

Trouble Code: U1301



Class 2 Circuit Short to Battery

Possible Causes:



Class 2 serial data line was in a high state for 3 seconds due to a short to VREF or system power
 
One or more modules on Class 2 line has an short to power
 

Trouble Code: U1305



Class 2 Data Link High or Low

Possible Causes:



Class 2 serial data line has either a high or low voltage condition on the circuit, and the module cannot identify the fault
 
One or more modules on Class 2 line has an short to power
 
One or more modules on the Class 2 line has a short to ground
 

Trouble Code: U2100



Controller Area Network (CAN) Bus Communication

Possible Causes:



This DTC cannot be retrieved with a current status. Diagnosis of a current DTC is accomplished via Scan Tool Does Not Communicate with High Speed GMLAN Device . Refer to Data Link References for the correct procedure for the specific module(s) and the busses they use to communicate.
 

Trouble Code: U2103



Fewer Controllers On Than Programmed

Trouble Code: U2105



Lost Communication With Engine Control Module (ECM)

Possible Causes:



Diagnose any power moding DTCs prior to diagnosing data communication DTCs.
 

Trouble Code: U2106



Lost Communication With Transmission Control Module (TCM)

Possible Causes:



Diagnose any power moding DTCs prior to diagnosing data communication DTCs.
 

Trouble Code: U2107



Lost Communication With Body Control Module (BCM)

Possible Causes:



Diagnose any power moding DTCs prior to diagnosing data communication DTCs.
 

Trouble Code: U2108



Lost Communication With Electronic Brake Control Module (EBCM)

Possible Causes:



Diagnose any power moding DTCs prior to diagnosing data communication DTCs.
 

Trouble Code: U2113



Lost Communication With Sensing Diagnostic Module (SDM)

Possible Causes:



Diagnose any power moding DTCs prior to diagnosing data communication DTCs.
 

Trouble Code: U2122



Lost Communication With Radio

Possible Causes:



Diagnose any power moding DTCs prior to diagnosing data communication DTCs.
 

Trouble Code: U2125



Lost Communication With Mobile Communications Control Systems

Possible Causes:



Diagnose any power moding DTCs prior to diagnosing data communication DTCs.
 

Trouble Code: U2129



Lost Communications With Remote Function Actuator (RFA)

Possible Causes:



Diagnose any power moding DTCs prior to diagnosing data communication DTCs.
 

Trouble Code: U2137



Lost Communication With Vehicle Theft Deterrent (VTD)

Possible Causes:



Diagnose any power moding DTCs prior to diagnosing data communication DTCs.
 

Trouble Code: U2172



Lost Communication With Digital Radio Receiver

Possible Causes:



Diagnose any power moding DTCs prior to diagnosing data communication DTCs.
 

Trouble Code: U2199



Unassigned

Possible Causes:



Diagnose any power moding DTCs prior to diagnosing data communication DTCs.
 

 
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