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.
1999 Chevrolet Pickup C3500, 2D Pickup, 6.5 F, AutomaticFACTORY OEM SERVICE PROCEDURE
Service Intervals & Specifications
REPLACEMENT INTERVALS
| Component | Interval (Miles) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| "C", "K", "L", "M", "S" & "T" Series | ||||||||||
| Accessory Drive Belt | (1) 60,000 | |||||||||
| Air Filter | 30,000 | |||||||||
| Engine Coolant | 150,000 | |||||||||
| Fuel Filter | 30,000 | |||||||||
| Oil & Filter | (2) 7500 | |||||||||
| Spark Plugs | 100,000 | |||||||||
| "E" & "J" Series | ||||||||||
| Accessory Drive Belt | (1) 30,000 | |||||||||
| Air Filter | 30,000 | |||||||||
| Engine Coolant | 30,000 | |||||||||
| Fuel Filter | 30,000 | |||||||||
| Oil & Filter | 7500 | |||||||||
| Spark Plugs | 30,000 | |||||||||
| "G" & "P" Series | ||||||||||
| Accessory Drive Belt | (1) 60,000 | |||||||||
| Air Filter | 30,000 | |||||||||
| Engine Coolant | 150,000 | |||||||||
| Fuel Filter | (3) 30,000 | |||||||||
| Oil & Filter | (2) 7500 | |||||||||
| Spark Plugs | 100,000 | |||||||||
| "U" Series | ||||||||||
| Accessory Drive Belt | (1) 60,000 | |||||||||
| Air Filter | 30,000 | |||||||||
| Engine Coolant | 150,000 | |||||||||
| Fuel Filter | (4) | |||||||||
| Oil & Filter | 7500 | |||||||||
| Spark Plugs | 100,000 | |||||||||
|
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Factory Service Tools
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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.
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