P1584

Code

CHEVROLET P — Powertrain

Cruise Control Disabled

Brand: CHEVROLET

Type: P — Powertrain

Views: UK: 20 EN: 50 RU: 21

AI status

Completed

ready

Completed 100%

Page language: EN

Causes

Faulty brake light switch or brake switch circuit
Clutch switch or clutch interlock (manual transmission) fault
Blown fuse or relay in cruise/control circuits
Low battery or poor battery/charging system voltage
Vehicle speed sensor (VSS) or speed signal failure
Faulty PCM/BCM/module controlling cruise or lost CAN communication

Symptoms

Cruise control inoperative or disabled menu message
Cruise indicator lamp off or flashing on dash
Cruise set/Resume functions cannot be engaged
Possible related warning lights (ABS/Traction/Check Engine)
Cruise may work intermittently or only after rebooting vehicle

What to check

Read DTCs and freeze-frame data with a scan tool; note related codes
Verify battery voltage at rest and while cranking (should be ~12.4–14.5 V)
Inspect fuses and relays related to cruise/cruise enable circuits
Check brake lamp operation by observing rear lamps while pressing brake pedal
Verify brake pedal switch continuity and correct switching action
For manual trans, verify clutch switch operation; for automatic, verify park/gear inhibitor inputs

Signal parameters

Brake switch: 12V/key on (released) → 0V (pressed) or specified OEM logic level
Clutch switch (manual): open/closed state when pedal depressed/released
Ignition 12V supply to cruise/PCM circuits (~12V battery voltage)
Vehicle speed sensor (VSS) speed signal (pulses/km or mph) and expected RPM/speed values
CAN messages: cruise enable status and module acknowledgements
Cruise set/resume switch inputs on steering column (active/inactive states)

Diagnostic algorithm

Connect a professional scan tool, record P1584 and any other stored/active codes and freeze-frame data.
Verify battery and charging system health; charge or replace battery if voltage is low or unstable.
Check fuses/relays for cruise/cruise enable and replace any blown items.
Verify brake lights operate when pedal pressed; if not, inspect bulbs/lamps and brake lamp circuit.
Test brake pedal switch for correct operation and adjust/replace if faulty. For manual trans, test clutch switch; for automatics verify park/neutral safety and gear selection inputs.
Inspect wiring and connectors for corrosion, damage or poor grounds at brake switch, steering column switches, BCM and PCM.
Use scan tool to monitor live inputs (brake/clutch switches, VSS, CAN messages) while operating controls to reproduce fault condition.
If VSS or ABS-related codes present, diagnose and repair those systems as they can disable cruise.
If inputs and wiring are good but P1584 persists, investigate BCM/PCM module faults or communication errors; consult OEM service information for module tests or reprogramming procedures.
After repair, clear codes and perform a road test to confirm cruise control functions and that P1584 does not return.

Likely causes

Brake pedal switch failed or misadjusted
Open or shorted cruise enable/fuse/relay circuit
VSS or speed signal intermittent/incorrect
Low system voltage or poor ground at control modules
Module-to-module communication error (CAN)

Fault status

⚠️ Status

Cruise Control Disabled — system has been inhibited due to a detected fault or safety input. Repair required before normal cruise operation is allowed.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2 hours

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