P2563 on GMC
Turbocharger Boost Control Position Sensor "A" Circuit Range/Performance
P2563 on GMC vehicles indicates turbocharger boost control position sensor "a" circuit range/performance. Au7o has documented this code across 1 GMC model — most commonly on Sierra 2500HD. This generic powertrain code sets when the PCM/ECM detects that the signal from the turbocharger boost control position sensor (which reports the position of the variable-vane or wastegate actuator) is out of the expected range or does not respond as commanded. It indicates the module cannot confirm the turbocharger boost control mechanism is moving to the position it requested, often pointing to a vane/actuator position-sensing or boost-control fault. Typical repair costs on GMC range from $250 to $2,800, depending on the specific model and root cause.
Common Causes of P2563
- •Faulty turbocharger boost control (vane) position sensor
- •Sticking or seized variable-vane mechanism or wastegate actuator
- •Failing turbocharger boost control solenoid/actuator
- •Wiring or connector faults (open, short, corrosion, chafing) in the sensor circuit
- •Carbon buildup binding the turbo vanes (common on diesels)
- •Poor PCM/ECM ground or, rarely, a failed control module
P2563 on GMC by Model
GMC Sierra 2500HD(1 issue)
- Variable-Geometry Turbo Unison Ring Seizing and Vane Position Sensor Failure (P003A / P2563)2006-2016
The Garrett variable-geometry turbocharger used on the LBZ, LMM and LML Duramax controls boost by pivoting vanes on a unison ring inside the turbine housing. Soot and carbon bake onto the ring over time and it begins to bind, so the actuator can no longer move the vanes to the commanded position. The ECM sees the mismatch and sets P003A (turbocharger position performance) and/or P2563 (turbocharger vane position sensor performance), usually together, and puts the truck in a reduced-power state. Trucks that idle a lot or run short trips soot the ring up fastest. Duramax forum and Diesel Place threads on these two codes run for hundreds of pages across 2006-2016 Sierra 2500HD trucks.
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View P2563 across all makes →Frequently Asked Questions
What does P2563 mean on GMC?▼
P2563 stands for "Turbocharger Boost Control Position Sensor "A" Circuit Range/Performance." This generic powertrain code sets when the PCM/ECM detects that the signal from the turbocharger boost control position sensor (which reports the position of the variable-vane or wastegate actuator) is out of the expected range or does not respond as commanded. It indicates the module cannot confirm the turbocharger boost control mechanism is moving to the position it requested, often pointing to a vane/actuator position-sensing or boost-control fault. On GMC specifically, this code is documented across 1 model.
What causes P2563 on GMC vehicles?▼
Common causes on GMC: Faulty turbocharger boost control (vane) position sensor, Sticking or seized variable-vane mechanism or wastegate actuator, Failing turbocharger boost control solenoid/actuator, Wiring or connector faults (open, short, corrosion, chafing) in the sensor circuit, Carbon buildup binding the turbo vanes (common on diesels). Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P2563 on a GMC?▼
Repair costs on GMC range from $250 to $2,800, depending on the specific model and root cause.
Which GMC models have P2563 documented?▼
Au7o has documented P2563 on 1 GMC model: Sierra 2500HD.