Orlando

DTC P1761 or P1762

A signal circuit is provided by the body control module (BCM) to the Tap Up/Down circuit. When a Tap Up/Down request is made by pressing a plus or minus button or moving the shift lever, a corresponding voltage drop occurs across the resistor network embedded in the switches. This voltage drop is monitored by the BCM. The BCM will send the request to the transmission control module (TCM) to perform the upshift or downshift. The BCM also provides a signal circuit to the transmission mode switch. When the switch is depressed, the BCM sends the request to the TCM. The TCM is constantly monitoring the serial data sent from the BCM for the correct number and sequence of counts for Tap Up and Tap Down function and transmission mode switch.

P1761

The TCM detects that the serial data for the Tap Up/Tap Down Switch signal circuit is corrupt 3 or more times in 10 seconds

P1762

The TCM detects that the serial data for the Trans Mode Switch signal circuit is corrupt 3 or more times in 10 seconds.

P1761

P1762

DTCs P1761 and P1762 are Type C DTCs.

Description and Operation

Electronic Component Description for control solenoid valve assembly information.

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

1. DTCs P1761 and P1762 are informational DTCs. Diagnose all other BCM DTCs prior to DTC P1761. Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
2. If there are no other BCM DTCs, diagnosis is accomplished by looking for an intermittent CAN circuit fault. Refer to Scan Tool Does Not Communicate with High Speed GMLAN Device .
3. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.