P0800 GMC 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 GMC 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 GMC 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 GMC?
- Check Active Transfer Case Control Module for codes
- Faulty Active Transfer Case Control Module
How to Fix the DTC P0800 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 P0800 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 P0800 GMC code?
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Need Help with the Code?
Get the P0800 GMC code diagnosed by a professional: Find a repair shop in your area
Information for Specific GMC Models
- P0800 2014 GMC Sierra — Active Transfer Case Control Module Requested MIL Illumination
- P0800 2015 GMC Sierra — Active Transfer Case Control Module Requested MIL Illumination
- P0800 2016 GMC Sierra — Active Transfer Case Control Module Requested MIL Illumination
- P0800 2017 GMC Sierra — Active Transfer Case Control Module Requested MIL Illumination
- P0800 2018 GMC Sierra — Active Transfer Case Control Module Requested MIL Illumination
Frequently Asked Questions about P0800 GMC Code
1. What are the common symptoms of OBDII code P0800 in a GMC vehicle?
- Common symptoms of P0800 may include the check engine light illuminating, issues with the transfer case control module, and possible difficulty shifting gears.
2. What could cause OBDII code P0800 to trigger in a GMC vehicle?
- The most common cause of P0800 is a malfunction within the active transfer case control module, which may be due to electrical faults, module failure, or wiring issues.
3. How can I diagnose OBDII code P0800 in my GMC vehicle?
- Diagnosing P0800 typically involves using an OBDII scanner to read the code, checking the transfer case control module for any visible damage or loose connections, and performing a thorough inspection of the wiring harness.
4. Is it safe to drive with OBDII code P0800 illuminated in my GMC vehicle?
- It is generally not recommended to drive with the P0800 code illuminated, as it may lead to further damage to the transfer case control module or affect the vehicle's performance.
5. Can I reset OBDII code P0800 in my GMC without repairing the issue?
- While you can clear the code temporarily, it is important to address the underlying issue causing P0800 to prevent it from reoccurring and potentially causing more serious problems.
6. What are some repair tips for resolving OBDII code P0800 in a GMC vehicle?
- Repair tips for P0800 may include checking and repairing any damaged wiring, replacing the transfer case control module if necessary, and ensuring all connections are secure.
7. How much does it typically cost to repair OBDII code P0800 in a GMC vehicle?
- The cost of repairing P0800 can vary depending on the exact cause of the issue, but it may involve parts and labor expenses ranging from $200 to $600 or more.
8. Can a DIY enthusiast fix OBDII code P0800 in a GMC vehicle?
- Depending on their skill level and access to tools, a DIY enthusiast may be able to address P0800 by following repair guides, but it is recommended to consult a professional if unsure.
9. Will OBDII code P0800 cause my GMC vehicle to fail an emissions test?
- Yes, if the check engine light is illuminated due to P0800, your GMC vehicle may fail an emissions test, as the code indicates a potential issue with the emissions control system.
10. How often does OBDII code P0800 occur in GMC vehicles?
- OBDII code P0800 is not extremely common, but it can occur in GMC vehicles, particularly in models with active transfer case control modules that may experience electrical or module failures.
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