P1564 GMC Code - Cruise Control System Vehicle Acceleration Too High
Quick Answer
With the engine running with Cruise Control enabled and engaged, the Powertrain Control Module (PCM) detects an extremely rapid rate of vehicle acceleration. Common causes include Faulty Cruise Control System, Cruise Control System harness is open or shorted, Cruise Control System circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
- What it means
- P1564 GMC indicates Cruise Control System Vehicle Acceleration Too High.
- Common causes
- Common causes include Faulty Cruise Control System, Cruise Control System harness is open or shorted, Cruise Control System circuit poor electrical connection.
- Severity
- Moderate - service should be scheduled soon.
- Can I drive?
- The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
Code P1564 GMC Description
What are the Possible Causes of the DTC P1564 GMC?
- Faulty Cruise Control System
- Cruise Control System harness is open or shorted
- Cruise Control System circuit poor electrical connection
How to Fix the DTC P1564 GMC?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1564 GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P1564 GMC code?
Need more information on how to fix the P1564 GMC code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1564 GMC code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1564 GMC Code
What does the OBDII code P1564 on a GMC vehicle mean?
The code P1564 indicates that the cruise control system detected excessively high vehicle acceleration beyond its programmed limits.
What are common symptoms of a P1564 error code in a GMC vehicle?
Symptoms include the cruise control not functioning properly, the cruise control light turning off or blinking, and potential erratic acceleration behavior.
What causes a P1564 code on a GMC vehicle?
Common causes include a faulty cruise control module, a malfunctioning throttle position sensor (TPS), wiring issues, or incorrect vehicle speed sensor readings.
Can I still drive my GMC if the P1564 code is active?
Yes, but the cruise control system may not work, and the vehicle may experience inconsistent acceleration, which could pose safety risks.
How do you diagnose a P1564 code on a GMC vehicle?
Start by checking the throttle position sensor, inspecting the cruise control module and wiring, and scanning for additional related codes that may help identify the issue.
How can I fix the P1564 code on my GMC vehicle?
Repairs may include replacing the throttle position sensor, repairing wiring connections, or replacing the cruise control module if it is defective.
Can a P1564 code be triggered by a software issue?
Yes, sometimes outdated or corrupted vehicle software can cause this code. A software update or reprogramming may resolve the issue.
Does the P1564 code affect fuel efficiency?
It typically does not directly impact fuel efficiency, but erratic acceleration caused by this issue could lead to inefficient driving behavior.
What tools are needed to troubleshoot a P1564 code on a GMC vehicle?
You will need an OBDII scanner, a multimeter for electrical testing, and potentially a service manual to locate specific components and wiring.
Is the P1564 code a common issue on GMC vehicles?
It is not one of the most common codes, but it can occur if the cruise control system components or related sensors fail.
Discuss the causes and fixes for P1564 GMC OBDII Code
Code P1564 GMC comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
