No recalls found in NHTSA database.
No owner complaints data is available in the provided dataset for P0571 on a 2019–2024 Chevrolet Silverado. The guide below uses standard OBD-II code meaning and general Silverado/GM system knowledge to help you diagnose and repair P0571 when it appears on these trucks.
CODE MEANING AND SEVERITY
- Code meaning: P0571 stands for Cruise Control Input Range/Performance (often referred to as Cruise Control Input A Circuit Range/Performance). In practical terms for a Silverado with automatic transmission, this is generally tied to the brake pedal switch input that the cruise control system uses to detect the brake actuation or to cancel/change cruise status. A fault in this input can prevent cruise control from engaging or cause it to disengage unexpectedly.
- Severity: Medium. The vehicle can usually be driven without cruise control, but the cruise control function may be unavailable or unreliable. If the fault is masking a brake switch issue or a wiring fault, this can affect brake-light function or safety systems, so it’s important to diagnose properly. The code itself is not typically an emissions failure, but it can affect convenience and safety features.
COMMON CAUSES ON CHEVROLET SILVERADO
- Faulty brake pedal/brake light switch input (the most common cause): worn, misadjusted, contaminated, or failing switch that provides the cruise control cancel/input signal.
- Wiring/connector problems: damaged, corroded, or pinched wires between the brake switch, cruise control module, and PCM/BCM; loose or water-damaged connectors.
- Faulty brake switch alignment or mounting: switch plunger not returning properly, causing intermittent contact.
- Voltage or grounding issues: low battery voltage, poor grounds, or transient spikes that upset the control modules.
- Cruise control module or related control module issue: rarely, a fault in the cruise control processor can trigger P0571 if it misreads the input.
- Intermittent/noise on signal circuits: EMI or harness routing issues causing spurious readings.
- Other related input faults that can co-exist and trigger P0571 (e.g., P0570 and P0572 range/performance codes for the other circuit, if present).
SYMPTOMS
- Cruise control may fail to engage, disengage unexpectedly, or report “Cruise Not Available” on the dash.
- Check Engine Light (or MIL) may be on with P0571 stored.
- Brake lights function may be unaffected, but if the brake switch is faulty, brake lights could be intermittent.
- Other symptoms could include related codes (P0570, P0572, P0573, P0574) appearing if the other input circuits are involved.
- In some cases, you may notice intermittent drivability issues if voltage or grounding is poor.
DIAGNOSTIC STEPS
Note: Always start with the simplest, most reproducible checks and document findings.
A. Confirm and prepare
- Use an OBD-II scanner to confirm P0571 and note any freeze-frame data, other codes, or pending codes.
- Check battery voltage and alternator charging. A weak or unstable power supply can trigger sensor input faults.
- Ensure vehicle is in a safe, flat area for tests. If you’re not comfortable with electrical diagnostics, proceed with caution or seek a pro.
B. Visual and functional inspection
- Inspect the brake pedal switch (brake light switch) and its mounting:
- Look for misalignment, damage, or a worn plunger.
- Check the switch for proper actuation when the brake pedal is pressed and released.
- Verify brake lights operate correctly when pressing and releasing the pedal.
- Inspect wiring harnesses and connectors:
- Look for damaged insulation, exposed wires, corrosion, or loose pins at the brake switch connector and any downstream connectors that feed the cruise control input.
- Check for moisture ingress around connectors, especially in the engine bay and pedal area.
- Check fuse(s) related to cruise control and brake input circuits (refer to the owner’s manual or a Silverado wiring diagram for exact fuse locations).
C. Electrical checks
- With ignition ON (engine off), test for 12V supply and proper ground at the brake switch connector and at the cruise control input circuit (as applicable). Use a digital multimeter.
- With brake pedal at rest, check for a stable signal from the brake switch (or the brake input circuit) to the PCM/BCM:
- When the brake is pressed, the switch should change state (signal should switch), and cruise control input should reflect this.
- Inspect the continuity of the brake switch circuit and related wiring:
- Look for open circuits, shorts to ground, or shorts to power.
- If equipped, check for any TCM/PCM updates or software programming requirements (dealer may have a software update for cruise control input handling; this is not a recall/TSB in the provided data, but is a common fix in the field).
D. Functional and component-level checks
- If the brake switch and wiring test good, test the cruise control system as a system:
- Connect a compatible scan tool to observe real-time input values for the cruise control signal line.
- Confirm that the “brake input” or “cruise control cancel” input responds correctly when the pedal is pressed and released.
- If the signal path checks out, consider testing or replacing the brake switch if it seems suspect.
- If all electrical checks pass and P0571 persists, the fault may lie in the cruise control module or a data path to the PCM/BCM. This may require more advanced diagnostics or software updates.
E. If no fault is found on a single visit
- Clear codes and re-check after driving; sometimes an intermittent connection triggers P0571.
- Check for related codes (P0570, P0572, P0573, P0574) that may indicate which input circuit is problematic.
RELATED CODES
- P0570: Cruise Control Input Range/Performance (General reference for the other cruise control input circuit)
- P0572: Cruise Control Input Range/Performance - Circuit Low
- P0573: Cruise Control Input Range/Performance - Circuit High
- P0574: Cruise Control Input Range/Performance - Circuit Open/Short
- Related sensor/vehicle speed context codes that can interact with cruise control behavior (e.g., P0500 Vehicle Speed Sensor, though P0500 is not a direct cause of P0571, speed signal integrity can affect cruise control logic)
- If P0571 appears with other drivetrain or electrical codes, diagnose those in sequence as they may be the actual root cause.
REPAIR OPTIONS AND COSTS (2025 PRICES)
Note: Prices vary by region, shop, and whether you use a dealer or independent mechanic. The ranges below are general estimates for a Silverado.
Brake light switch replacement (most common fix)
- Parts: $15–$60
- Labor: $60–$150
- Estimated total: $75–$210
Brake switch adjustment or re-alignment
- Parts: typically included with a switch replacement
- Labor: $40–$100 (if the switch is reusable and simply needs adjustment)
- Estimated total: $40–$100
Wiring harness repair or connector replacement
- Parts: $5–$40 (connectors, pins)
- Labor: $100–$300 (depending on accessibility and routing)
- Estimated total: $105–$340
Cruise control module or BCM/PCM input circuit repair (less common)
- Parts: $150–$800 (module or harness assemblies)
- Labor: $100–$400
- Estimated total: $250–$1200
Software update or reflash (dealer recommended)
- Parts: $0–$50 (update is usually via software)
- Labor: $50–$150
- Estimated total: $50–$200
Comprehensive diagnostic labor (if using a shop)
- Diagnostic fee may apply if no fixed repair is identified
- Estimated: $80–$150
Tips:
- If the fault is intermittent, costs may include multiple diagnostic visits.
- Some shops may combine brake switch replacement with brake light service; ensure the suspected fault covers all issues before replacing expensive modules.
DIY vs PROFESSIONAL
- DIY-friendly tasks:
- Inspecting and replacing the brake light switch
- Adjusting or reseating the brake switch
- Checking and cleaning electrical connectors (with the battery disconnected)
- Basic wiring inspection for obvious damage and pin corrosion
- Verifying brake light function and basic circuit continuity with a multimeter
- When to go PRO:
- If you need to diagnose the cruise control signal path beyond the brake switch
- If the brake switch and wiring test good but P0571 persists
- If a software/ECU reflash is recommended by the dealer
- If the vehicle has complex wiring harness routing, or you suspect a harness repair behind panels, fenders, or the dash
- Safety note: When working with the airbag/BCM/PCM circuits, prefer professional service or ensure proper safety procedures.
PREVENTION
- Regularly inspect the brake pedal switch area during service intervals; ensure it's correctly aligned and free of debris.
- Keep brake lights functioning properly; a failing brake light switch can cause false signals to the cruise control system.
- Maintain clean, dry electrical connections; replace damaged connectors and apply dielectric grease to prevent corrosion.
- Avoid compromising the harness routing near moving parts or heat sources; secure harnesses to prevent chafing.
- Maintain battery health and charging system to minimize voltage dips that could trigger input faults.
- If you perform any dealer software updates or module replacements, ensure proper programming and calibration for your specific vehicle configuration.
- If a repair has been performed recently and P0571 returns, re-check the related wiring and connectors as vibrations and reassembly can loosen connections.
Data limitations and transparency
- The provided dataset shows no owner complaints and no recalls for P0571 on 2019–2024 Silverado in the NHTSA database. No official recalls or TSBs are cited here. The diagnostic guidance above uses general OBD-II knowledge and how the cruise control input typically interacts with the brake switch in GM vehicles. Real-world frequencies, dealer-approved repair procedures, or TSBs for this exact code in this model year may exist outside the provided data.
- If you want to verify whether there are model-year–specific recommendations, service bulletins, or recalls, you would need to check GM service portals, dealer networks, or NHTSA/GM databases beyond the provided dataset.