What is the firing order for a 1987 GMC Jimmy?

The firing order for a 1987 GMC Jimmy, which typically has a V6 or V8 engine, is 1-8-4-3-6-5-7-2 for the V8 engine and 1-6-5-4-3-2 for the V6 engine. It's important to verify the specific engine type in your vehicle, as the firing order can vary between the different engine configurations. Always refer to the vehicle's repair manual for precise information.