| Engine | Used in | Years (model years, per sources) |
|---|---|---|
| 6.2 (naturally aspirated) | C/K pickups, Suburban, G-vans | 1982 to 1993 |
| 6.5 (mostly turbocharged) | C/K pickups, Tahoe/Yukon, Suburban, vans | 1992 to 2002 |
These engines predate DPF and DEF systems, so the emissions-system pages do not apply. They use glow plugs for cold starting. They were replaced in light-duty pickups by the Duramax for 2001. Per Wikipedia, The Diesel Page and DieselHub.
GM 6.2 / 6.5-specific pages
Common to all diesels
These apply to GM 6.2 / 6.5 engines too.
- Hard start when cold
- Cranks, will not start
- White smoke
- Black smoke
- Blue smoke
- Low power / limp mode
- Rough idle
- Water in fuel light
- Overheating when towing
- Losing coolant
- Cold-weather gelling
- Turbo whistle / boost leak
- Injector knock
- Wet stacking
- Hot transmission when towing
- Fuel filter restriction
- Air in the fuel
- Oil consumption
- Crankcase blow-by
- Cavitation / liner pitting
- Maintenance basics
- Winter diesel prep
- Buying a used diesel
Where this comes from
- Wikipedia: Detroit Diesel V8 engine (GM 6.2/6.5)
- The Diesel Page: GM 6.2L and 6.5L diesels
- DieselHub: 6.5L GM/Detroit Diesel
- DieselHub: 6.2/6.5 glow plug system diagnostics
Last reviewed 2026-10-19. General information only: confirm with your service information and a qualified diesel technician.