PIE0608

Subject:
Engineering Information - Service AWD Lamp Illuminated On Driver Information Center (DIC), DTCs C1260, C1261,
C1262, C1263, C1264, C1265, C1266, C1267, C1290, C1291, C1292, C1293, C1295 and/or C1296 Set
Attention:
Proceed with this EI ONLY if the customer has commented about this concern AND the PIE number is listed in the
Global Warranty Management / Investigate History link (GWM/IVH). If the customer has not commented about this
condition or the EI does not show in GWM/IVH, disregard the PIE and proceed with diagnostics found in published
service information. THIS IS NOT A RECALL — refer to Service Bulletin 04-00-89-053 for more details on the use of
Engineering Information bulletins.
Brand:
Model:
Model Year:
VIN:
from
to
from
to
2021
-
-
Engine:
Transmission:
Equipped with
3.6L Engine
(RPO LFY)
Equipped with 9 SPD
Transmission (RPO
M3W)
Buick
Enclave
2018
Cadillac
XT5
2017
XT6
2020
Blazer
2019
Equipped with
3.6L Engine
(RPO LGX)
Traverse
2018
Equipped with
2.0L, 3.6L
Engines (RPOs
LTG, LFY)
Acadia
2017
Equipped with
3.6L Engine
(RPO LGX)
Chevrolet
GMC
Equipped with
2.0L, 3.6L
Engines (RPOs
LSY, LGX)
Equipped with 8 SPD, 9
SPD Tranmission
(RPOs MRC, M3T,
M3G)
Equipped with 9 SPD
Transmission (RPOs
M3W, M3G)
Equipped with 9 SPD
Transmission (RPOs
M3V, M3T)
Equipped with 6 SPD, 9
SPD Tranmission
(RPOs M7U, M3W)
Involved Region or Country
North America
Additional Options (RPOs)
Equipped with CHASSIS DRIVE LINE-ALL WHEEL DRIVE (AWD)/FOUR WHEEL DRIVE(4WD), DRIVER
SELECT (RPO F48)
1
Important: If the customer did not bring their vehicle in for this concern, DO NOT proceed with this EI.
Condition
Some customers may comment on Service AWD Lamp illuminated on the Driver Information Center (DIC).
Technicians may find one or more of the following DTCs set.
•
C1260 - Power Transfer Unit Clutch Position Sensor Circuit High Voltage
•
C1261 - Power Transfer Unit Clutch Position Sensor Circuit Low Voltage
•
C1262 - Power Transfer Unit Clutch Position Sensor Circuit
•
C1263 - Power Transfer Unit Clutch Position Sensor Signal Circuit High
•
C1264 - Power Transfer Unit Clutch Position Sensor Signal Circuit Low
•
C1265 - Power Transfer Unit Clutch Position Sensor Signal Circuit
•
C1266 - Power Transfer Unit Clutch Position Sensor Signal Circuit Incorrect
•
C1267 - Power Transfer Unit Clutch Position Sensor Signal Out Of Range
•
C1290 - Power Transfer Unit Clutch Motor Circuit High Voltage
•
C1291 - Power Transfer Unit Clutch Motor Circuit Low Voltage
•
C1292 - Power Transfer Unit Clutch Motor Circuit
•
C1293 - Power Transfer Unit Clutch Motor Circuit High Current
•
C1295 - Power Transfer Unit Clutch Motor Circuit Erratic
•
C1296 - Power Transfer Unit Clutch Motor Performance
GM Engineering is attempting to determine the root cause of the above condition. Engineering has a need to
gather information on vehicles PRIOR to repair that may exhibit this condition. As a result, this information will be
used to "root cause" the customer's concern and develop/validate a field fix.
Cause
Correction
If you encounter a vehicle with the above concern, perform normal diagnostics that apply to the DTCs listed above. If diagnostic leads to replacing the Power Transfer
Unit (PTU), stop and contact one of the engineers listed below BEFORE making any repairs.
Contact Information
The Contact Information has been redacted.
Please include the following information if leaving a message:
–
Technician name
–
Dealer name and phone number
–
Complete VIN and repair order (R.O) number
On the repair order, document the date and time the call was placed (even if the engineer was not reached).
If engineering is unable to return the call within one hour, proceed with diagnosis and repair based on information found in SI.
Warranty Information
If engineer was contacted or required information was provided, use:
Labor Operation
Description
Labor Time
4087778*
Service AWD Lamp Illuminated On Driver Information Center (DIC), Multiple
DTCs Set
0.4 hr
2
* This is a unique labor operation for bulletin use only.
Version
1
Modified
Released January 07, 2021
3