C0561 on Chevrolet: How to Diagnose & Fix
System Disabled / Invalid Serial Data Received
2 Chevrolet models · 2 documented issues · $150-$700 repair
C0561 on Chevrolet by model: symptoms, diagnosis and fix
The wheel speed sensors and their wiring are prone to failure due to the harsh commercial-use environment, causing the StabiliTrak and ABS systems to falsely activate during normal driving. The ABS unexpectedly engages during normal braking, extending stopping distances. The tone rings on the hub bearings also corrode.
Common Symptoms
- StabiliTrak warning light
- ABS activating during normal braking
- Traction control light on
- Speedometer fluctuating
- Extended braking distances
How to Fix
Scan for specific wheel speed sensor codes to identify which corner has failed. Replace the faulty wheel speed sensor and inspect the tone ring for corrosion or damage. Clean the sensor mounting area and apply anti-corrosion compound. If the hub bearing is original, replace the entire hub assembly for a fresh tone ring.
Sources for this issue (1)
A widely reported Silverado 1500 complaint is a sudden cascade of dash messages — 'StabiliTrak disabled,' then 'Service StabiliTrak,' 'Service Traction Control,' and finally 'Engine Power Reduced' — sometimes with a stumble or stall and limited throttle response. The most common root causes are a faulty accelerator pedal position (APP) sensor or throttle body (electronic throttle), but it is also frequently traced to poor/corroded ground connections and chafed wiring under the driver's door sill or at the underseat/main harness connector. Because it can drop the truck into reduced-power limp mode at speed, owners treat it as urgent.
Common Symptoms
- 'Service StabiliTrak' and 'Service Traction Control' messages
- 'Engine Power Reduced' / limp mode
- Throttle becomes unresponsive or truck stalls
- Multiple ABS/traction/stability lights at once
- Symptoms come and go (intermittent)
How to Fix
Scan for stored codes (commonly P2138 and related APP/throttle codes) and read live throttle/pedal data. Start by inspecting and cleaning the body grounds under the driver's door and the main harness connector (a known fix), then test/replace the APP sensor or throttle body as indicated. Apply any GM throttle-body or PCM software updates. Confirm the actual failed component before replacing the throttle body, as wiring/ground faults mimic sensor failure.
What you need to diagnose it
The repair instructions explicitly call for reading stored codes. Use a scanner that can read the named code families before choosing a repair.This issue involves C codes, which a basic engine-code reader cannot see.The recommended scanner supports these code families; confirm your exact year, model and module coverage before buying.
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Reading and clearing the code is DIY work. Module replacement or reprogramming is not — most modules are VIN-programmed, so a new one does nothing until a shop codes it to your car. Check for an open recall or service bulletin before buying anything.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Accelerator pedal assembly with position (APP) sensor — 2014-2018 (K2XX generation)OEM23362231Cross-refDorman 699-213, A-Premium APP pedal (Amazon B0CFXK98R8, lists 2014-2018 Silv, GM 20972082 (superseded by 23362231)$86–$162
Only replace after confirming P2138/P2122-type codes are not caused by the door-sill body grounds or the underseat harness connector — c
- Electronic throttle body with sensor — 4.3L V6 (LV3), 2014-2021OEM12676296Cross-refGM 12632171 / 12671014 / 12669536 / 12648414 (all superseded, Standard Motor Products / Dorman aftermarket units sold as 2$100–$295
4.3L-only throttle body; do not use the V8 part. 2022 Silverado 1500 with 4.3L is not shown on the GMPartsGiant fitment (listed 2014-2021) — a 2022 4.3L owner should confirm by VIN.
- Electronic throttle body with sensor — 5.3L V8 (L83 / L84), 2014-2022OEM12713775Cross-refGM 12740725 (current supersession of 12713775), GM 12617792 (earlier 5.3L number cross-referenced by afterma, A-Premium / ADIGARAUTO aftermarket units listing OE 12617792$200–$359
Confirm the failed component with live TPS/APP data first; grounds and chafed underseat harness wiring are
- Electronic throttle body (87mm) — 6.2L V8 (L86 / L87), 2014-2021OEM12740727Cross-refGM 12678223 / 12729495 / 12733469 / 12620263 / 12713774 (all, GM 12678312 (2019-2021 6.2L listing on GMPartsGiant, itself $80–$200
6.2L uses the 87mm LT-family throttle body shared with Corvette/Camaro LT1 — not interchangeable with the 5.3L unit.
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Sources for this issue (1)
C0561 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does C0561 mean on a Chevrolet?
C0561 stands for "System Disabled / Invalid Serial Data Received." This code sets when the ABS/electronic brake control module disables itself because it received invalid, missing, or implausible serial data over the vehicle communication bus. Rather than a failed brake part, it usually means the module can't trust the data it's getting from another module (or the bus itself is faulty), so it shuts down ABS and stability/traction control as a precaution. Common subcodes include -71 (invalid serial data received) and -72 (alive counter incorrect, indicating a bus or sending-module problem). The driver typically sees ABS, traction, and 'Service Stability/StabiliTrak' messages while base braking still works. On Chevrolet it is documented across 2 models: Express, Silverado 1500.
What are the most common causes of C0561?
The most common causes of C0561 are: Communication (CAN/serial data) bus fault or corrupted data, Failing module on the bus sending bad data, Wiring or connector problems on the data lines, Corrosion at module connectors, Low battery voltage or charging problems, Body control module or other module fault, Software/calibration mismatch between modules. The specific cause varies by vehicle.
How much does it cost to fix C0561 on a Chevrolet?
Published repair estimates on Chevrolet range from $150 to $700 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for C0561 on a different make?
View C0561 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.