You'll need to specify the engine size (e.g., 2.2L, 4.3L) to know for sure which fuel delivery system it has. The 2.2L engine is more likely to have multi-port fuel injection, while the 4.3L might have TBI, though later 4.3L engines might also have multi-port. Checking your owner's manual or a parts diagram specific to your vehicle's VIN is the most reliable way to confirm.