P1008 2015 GMC Sierra Code - Engine Coolant Bypass Valve Command Signal Message Counter Incorrect
Quick Answer
Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Common causes include Faulty Engine Coolant Bypass Valve, Engine Coolant Bypass Valve harness is open or shorted, Engine Coolant Bypass Valve circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1008 2015 GMC Sierra indicates Engine Coolant Bypass Valve Command Signal Message Counter Incorrect.
- Common causes
- Common causes include Faulty Engine Coolant Bypass Valve, Engine Coolant Bypass Valve harness is open or shorted, Engine Coolant Bypass Valve circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P1008 2015 GMC Sierra Description
What are the Possible Causes of the DTC P1008 2015 GMC Sierra?
- Faulty Engine Coolant Bypass Valve
- Engine Coolant Bypass Valve harness is open or shorted
- Engine Coolant Bypass Valve circuit poor electrical connection
How to Fix the DTC P1008 2015 GMC Sierra?
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 P1008 2015 GMC Sierra 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.
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Frequently Asked Questions about P1008 2015 GMC Sierra Code
What does the OBDII code P1008 mean on a 2015 GMC Sierra?
1. The P1008 code indicates an issue with the Engine Coolant Bypass Valve Command Signal Message Counter being incorrect, often related to communication or performance problems with the valve. 2.
What are the common symptoms of the P1008 code on a 2015 GMC Sierra?
Common symptoms include an illuminated check engine light, overheating, poor engine performance, or irregular heater operation. 3.
What causes the P1008 code on a 2015 GMC Sierra?
Possible causes include a malfunctioning coolant bypass valve, wiring or connector issues, a faulty engine control module (ECM), or software glitches. 4.
Can I drive my 2015 GMC Sierra with the P1008 code active?
Driving with this code is not recommended as it may lead to engine overheating or reduced performance, potentially causing further damage. 5.
How do I diagnose the P1008 code on a 2015 GMC Sierra?
Diagnosis typically involves checking the bypass valve, inspecting wiring and connectors for damage, and using a scan tool to monitor the valve's command signal. 6.
What repairs can fix the P1008 code on a 2015 GMC Sierra?
Common fixes include replacing the coolant bypass valve, repairing damaged wiring, cleaning or reconnecting loose connectors, or reprogramming the ECM. 7.
How much does it cost to repair the P1008 code on a 2015 GMC Sierra?
The repair cost can vary but typically ranges from $150 to $400, depending on whether the bypass valve or wiring needs replacement. 8.
Can a software update fix the P1008 code on a 2015 GMC Sierra?
In some cases, a software update for the ECM may resolve the issue if the problem stems from a programming error. 9.
What tools are needed to troubleshoot the P1008 code on a 2015 GMC Sierra?
You’ll need an OBDII scan tool, a multimeter for electrical testing, and possibly a service manual for wiring diagrams and specifications. 10.
Is P1008 a common problem on the 2015 GMC Sierra?
P1008 is not a very common issue, but it can occur, especially if the coolant bypass valve or related components are worn or damaged.
Discuss the causes and fixes for P1008 2015 GMC Sierra OBDII Code
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