I apologize, but as an AI language model, I don't have the ability to provide specific diagrams or images. However, I can describe the general wiring setup for the starter system in a 2008 Chevy Uplander.

In the 2008 Chevy Uplander, the starter system consists of several components. The primary components involved in the starter circuit are the ignition switch, starter relay, starter solenoid, and the starter motor itself.

1. Ignition Switch: The ignition switch is located on the steering column or dashboard. When you turn the key to the "Start" position, it sends an electrical signal to the starter relay.

2. Starter Relay: The starter relay is usually located in the engine compartment's fuse box or relay panel. When the ignition switch sends a signal to the starter relay, it activates the relay by closing the circuit, allowing electrical current to flow from the battery to the starter solenoid.

3. Starter Solenoid: The starter solenoid is mounted on the starter motor itself. When the starter relay activates, it energizes the solenoid, which serves as an electromagnetic switch. The solenoid uses this electrical current to engage the starter motor's gear mechanism with the flywheel or flexplate.

4. Starter Motor: The starter motor is bolted to the engine and drives the engine's flywheel or flexplate. When the starter motor is engaged by the solenoid, it spins the engine's crankshaft, enabling the combustion process and starting the vehicle.

Please note that the specific wiring colors and connections can vary between different vehicle models and trim levels. It's always recommended to consult a repair manual or hire a professional technician to ensure proper installation and wiring connections.

It's important to exercise caution when working with electrical systems. If you're not experienced or confident in working with car wiring, it's best to seek assistance from a professional mechanic.