P2739: Solenoid F circuit-high diagnosis needs care with conflicting source columns

P2739 is labeled pressure-control-solenoid-F circuit high, and the reviewed GM strategy text describes a short to voltage. However, both reviewed 2025 files contain contradictory malfunction and threshold columns that describe a ground short.

Do not turn copied wording into a test specification

Because the fault direction and threshold wording conflict, the ground-referenced impedance in these rows is not presented here as a verified P2739 test limit. The applicable vehicle service procedure must resolve the circuit-high detection criterion before detailed electrical testing.

The timing also differs between sources. File 25OBDG03A lists failure beyond 0.06 second in a sample period above 0.13 second; 25OBDG04B lists more than 0.30 second within more than 0.50 second. This reinforces the need to keep calibration variants separate.

What the sources consistently establish

The code belongs to solenoid F's electrical control path, with transmission-specific mappings to clutch control, 8-speed line-pressure control or the CVT binary pump. Battery and power-mode eligibility and an enabled mapped high-side driver are required. Both rows classify the response as Type A, one trip.

Identify the transmission and reporting calibration, preserve supply-driver state and investigate the high-circuit description using the correct electrical information. The code does not independently demonstrate high hydraulic pressure or a mechanically stuck actuator.

Verification should demonstrate the correct circuit behavior and a completed monitor without recurrence. These summary tables do not establish the failed component or justify a solenoid replacement.

Source and applicability

Keep the stated transmission function and source calibration separate from other applications. GM diagnostic table, PDF page 1193. GM diagnostic table, PDF page 2256.