In brief, the 2007 GMC Envoy offered two gasoline engines: a 4.2-liter inline-six and a 5.3-liter V8. A 6.0-liter engine existed in the TrailBlazer SS, not in the Envoy.
Engine options
Before listing the engines, it’s helpful to know the two gasoline powerplants the Envoy could be equipped with for the 2007 model year.
- 4.2-liter inline-six (I6) — about 275 horsepower and 275 lb-ft of torque.
- 5.3-liter V8 (Vortec 5300) — about 315 horsepower and 338 lb-ft of torque.
These two options gave buyers a choice between strong, linear acceleration from the V8 and a smoother, higher-revving six-cylinder for daily driving and hauling.
Which engine went with which trim
In general terms, the 4.2L inline-six was the more common choice across base trims, while the 5.3L V8 was available as an upgrade on higher trims or as a factory option. Always check a specific vehicle’s VIN to confirm the exact engine configuration.
Notes on the TrailBlazer connection
The TrailBlazer lineup in the same era did offer a 6.0-liter V8 (used in the sportier TrailBlazer SS), but that larger engine was not offered for the Envoy in 2007. The Envoy’s two engine options remained the 4.2L I6 or the 5.3L V8.
Summary
For the 2007 GMC Envoy, buyers could choose between a 4.2-liter inline-six (275 hp, 275 lb-ft) and a 5.3-liter V8 (315 hp, 338 lb-ft). The 6.0-liter engine was reserved for the TrailBlazer SS, not the Envoy. Always verify the exact engine on a used vehicle, as trim levels and options varied by market and build date.