What is the firing order for a 1990 gmc safari van?

The firing order for a 1990 GMC Safari van, which is equipped with a 4.3L V6 engine, is 1-6-5-4-3-2. This sequence is crucial for the engine's proper operation, ensuring that the cylinders fire in the correct order for optimal performance. Always consult the vehicle's service manual for specific details related to your engine configuration.