Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2021TRANSIT-350 HD BASE, VAN CARGO EXTENDED, 3.5L ENG VIN 8, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 573 (FRONT DRIVE AXLE/DIFFERENTIAL)DIAGNOSIS AND TESTINGFRONT DRIVE AXLEGLOBAL CUSTOMER SYMPTOM CODE (GCSC) CHART
2021 Ford Transit-350 HD Base, Van Cargo Extended, 3.5L Eng VIN 8, AWD
Global Customer Symptom Code (GCSC) Chart
2021 Ford Transit-350 HD Base, Van Cargo Extended, 3.5L Eng VIN 8, AWDSECTION Global Customer Symptom Code (GCSC) Chart
WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods .
Global Customer Symptom Code Chart
| Customer Symptom | Action |
|---|---|
| Start/Run/Move > Running > Overheats > Always | GO to Pinpoint Test A |
| Start/Run/Move > Running > Overheats > Always | GO to Pinpoint Test B |
| Start/Run/Move > Moving > No Engagement > Both (FWD and RVRS) | GO to Pinpoint Test D |
| Start/Run/Move > Moving > 4 x 4 Function > Inoperative | GO to Pinpoint Test D |
| Start/Run/Move > Fluids > Axle > Consumption | GO to Pinpoint Test A |
| Start/Run/Move > Fluids > Axle > Consumption | GO to Pinpoint Test B |
| Start/Run/Move > Fluids > Axle > Consumption | GO to Pinpoint Test C |
| Start/Run/Move > Fluids > Axle > Visible Leak | GO to Pinpoint Test A |
| Start/Run/Move > Fluids > Axle > Visible Leak | GO to Pinpoint Test B |
| Start/Run/Move > Fluids > Axle > Visible Leak | GO to Pinpoint Test C |
| Start/Run/Move > Fluids > Axle > Visible Leak | GO to Pinpoint Test F |
| Start/Run/Move > Fluids > Axle > Visible Leak | GO to Pinpoint Test G |
| Start/Run/Move > Fluids > Axle > Visible Leak | GO to Pinpoint Test H |
| Start/Run/Move > Fluids > Axle > Contamination | GO to Pinpoint Test A |
| Start/Run/Move > Fluids > Axle > Contamination | GO to Pinpoint Test B |
| Start/Run/Move > Fluids > Axle > Contamination | GO to Pinpoint Test C |
| Start/Run/Move > Fluids > Axle > Contamination | GO to Pinpoint Test E |
| Start/Run/Move > Noise > Moving/Driving > Always | GO to Pinpoint Test G |
| Start/Run/Move > Noise > Moving/Driving > Always | GO to Pinpoint Test H |
| Start/Run/Move > Noise > Moving/Driving > Always | GO to Pinpoint Test I |
| Start/Run/Move > Noise > Moving/Driving > Always | GO to Pinpoint Test J |
| Start/Run/Move > Noise > Moving/Driving > Always | GO to Pinpoint Test K |
| Start/Run/Move > Noise > Moving/Driving > Always | GO to Pinpoint Test L |
| Start/Run/Move > Noise > Moving/Driving > Always | GO to Pinpoint Test M |
| Start/Run/Move > Noise > Moving/Driving > Always | GO to Pinpoint Test N |
| Start/Run/Move > Noise > Moving/Driving > Always | GO to Pinpoint Test O |
| Start/Run/Move > Vibration > Moving/Driving > Intermittent | GO to Pinpoint Test P |
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.