Home » GM 6.5 » GM/Detroit 6.5L – General Information – EFI APPLICATIONS

GM/Detroit 6.5L – General Information – EFI APPLICATIONS

In the 1992 model year, General Motors introduced a 6.5-Liter V8 diesel engine, RPO code L65, for light-duty trucks with Gross Vehicle Weight Ratings (GVWR) between 8,500 and 15,000 pounds. Among its many features, this engine was outfitted with a camshaft-driven mechanical fuel pump that delivered metered fuel to the engine’s eight injection nozzles.

Forthe 1994 model year, an electronically fuel injected version of the 6.5L V8 diesel engine becomes available. This engine can be teamed with either a manual or electronic automatic transmission, and is also available with heavy-duty and lightduty emissions packages. The following chart identifies RPO and VIN numbers for the various 6.5L V8 diesel engine applications.

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