C0569 on GMC: How to Diagnose & Fix
Manufacturer-Specific Chassis Code (GM: System Configuration Error)
1 GMC model · 1 documented issue · $200-$600 repair
C0569 on GMC by model: symptoms, diagnosis and fix
Four-wheel-drive Yukon XL models with the NP263 (NQH) and NP246 transfer cases develop fluid leaks from the front and rear output shaft seals. The leak typically starts as a slow weep and progresses to a steady drip, leaving ATF spots on the driveway. If left unaddressed, the transfer case runs low on fluid, causing internal damage to the chain, sprockets, and bearings. The rear output seal is the most common failure point.
Common Symptoms
- ATF dripping from transfer case area
- Transfer case fluid low at service intervals
- Grinding or whining noise from transfer case
- Difficulty engaging 4WD
- Service 4WD message on dashboard
How to Fix
Replace the leaking output shaft seal(s). The rear seal can be replaced with the transfer case in the vehicle by removing the rear driveshaft and prying out the old seal. The front seal requires more disassembly. Use only genuine ACDelco seals (ACDelco 24232325) as aftermarket seals have a higher failure rate on this application. Refill with Dexron VI ATF to the proper level. Inspect the output shaft for scoring — a scored shaft will destroy the new seal quickly.
Sources for this issue (1)
C0569 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does C0569 mean on a GMC?
C0569 stands for "Manufacturer-Specific Chassis Code (GM: System Configuration Error)." C0569 is used by GM as a 'System Configuration Error,' typically set by the electronic brake control module (and related modules) when configuration data does not match the vehicle. It commonly appears on 4WD/AWD vehicles after a transfer case control module is replaced (requiring a relearn) or when tire/system parameters were not entered correctly. When active, features like 4WD, StabiliTrak/traction control may be disabled until the configuration or relearn is completed. The exact cause should be confirmed against GM service procedures. On GMC it is documented across 1 model: Yukon XL.
What are the most common causes of C0569?
The most common causes of C0569 are: Transfer case control module replaced without performing the relearn, Configuration/calibration data not entered or mismatched, Poor connections at module harness connectors, Failed transfer case encoder motor position sensor, Wiring fault between EBCM/BCM and related modules, Module programming or software issue. The specific cause varies by vehicle.
How much does it cost to fix C0569 on a GMC?
Published repair estimates on GMC range from $200 to $600 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for C0569 on a different make?
View C0569 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.