Today we have a 2017 GMC Sierra 5.3l 4x4 that the customer states was stuck in 4wd. He said it would not come out of 4wd and he had to remove the driveshaft to drive the vehicle home. Let's see if we can figure out what is going on and get this truck back to him
Codes:
C0306:04 - Range Actuator Control Circuit Open
C0321:04 - Rear Drive Module Lock Circuit Open
C0392:08 - Transfer Case Range Position Sensor Circuit Performance - Signal Invalid
C0396:07 - Incremental Sensor High Voltage
C0398:00 - Range Actuator Position - Range Correlation
C039E:07 - Range Actuator Position Sensor Signal Circuit High Voltage
Tools Used:
Autel MaxiSYS MS909
0:00 Intro
0:30 Full System Scan
1:35 We Found The Driveshaft
2:17 Confirming Complaint
3:16 Looking At ECU Calibration Version
3:35 Checking TIS2Web For Latest Calibration
5:24 Looking At The TSB
6:19 Programming With Techline Connect
9:44 Checking To See If The Module Is Updated
10:15 Relearning The Transfer Case Range
12:12 Checking For Codes
12:30 Taking The Truck For A Drive
16:20 We DId It!