P0800 2016 GMC Sierra Code - Active Transfer Case Control Module Requested MIL Illumination
Quick Answer
Control modules constantly monitor the vehicle for any condition which may adversely affect vehicle performance. Common causes include Check Active Transfer Case Control Module for codes, Faulty Active Transfer Case Control Module. 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
- P0800 2016 GMC Sierra indicates Active Transfer Case Control Module Requested MIL Illumination.
- Common causes
- Common causes include Check Active Transfer Case Control Module for codes, Faulty Active Transfer Case Control Module.
- 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 P0800 2016 GMC Sierra Description
The DTC will be set when the ECM receives a serial data message from the Active Transfer Case Control Module indicating that DTC has been set in the module.
What are the Possible Causes of the DTC P0800 2016 GMC Sierra?
- Check Active Transfer Case Control Module for codes
- Faulty Active Transfer Case Control Module
How to Fix the DTC P0800 2016 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 P0800 2016 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.
Need more information about the P0800 2016 GMC Sierra code?
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Frequently Asked Questions about P0800 2016 GMC Sierra Code
1. What does the OBDII code P0800 mean on a 2016 GMC Sierra?
P0800 indicates that the Active Transfer Case Control Module has requested the Malfunction Indicator Light (MIL) to illuminate due to a detected issue.
2. What are the common symptoms of a P0800 code in a 2016 GMC Sierra?
Symptoms include the Check Engine Light turning on, issues with shifting into or out of 4WD, and possible drivetrain performance problems.
3. What causes the P0800 code in a 2016 GMC Sierra?
Common causes include a malfunctioning transfer case control module, wiring issues, communication errors between modules, or sensor failures within the transfer case system.
4. Can I drive my 2016 GMC Sierra with a P0800 code?
Driving may be possible, but it is not recommended as it could lead to further damage to the transfer case system or drivetrain.
5. How is the P0800 code diagnosed on a 2016 GMC Sierra?
A mechanic will use a scan tool to check for related codes, inspect the transfer case control module, wiring, and sensors, and perform tests to verify proper operation.
6. How can I fix the P0800 code on my 2016 GMC Sierra?
Repairs may include replacing the transfer case control module, repairing damaged wiring, or reprogramming the module if a software issue is found.
7. Is the P0800 code specific to the transfer case system?
Yes, this code is related to the transfer case control module, which manages the 4WD system in your GMC Sierra.
8. How much does it cost to repair a P0800 code on a 2016 GMC Sierra?
Costs vary but typically range from $100 to $500, depending on whether the issue involves module replacement, wiring repair, or reprogramming.
9. Can a dead battery cause the P0800 code in a 2016 GMC Sierra?
A low or dead battery can sometimes trigger communication errors, potentially leading to this code, but it’s not a common cause.
10. Does the P0800 code always mean the transfer case control module is bad?
No, it could also be caused by wiring issues, sensor failures, or software problems. Proper diagnosis is essential to determine the exact cause.
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