How do you change CPI on 1995 gmc jimmy?

To change the CPI (Central Port Injection) on a 1995 GMC Jimmy, first, disconnect the battery and relieve the fuel system pressure. Remove the intake manifold to access the CPI unit, which is located under it. Disconnect the fuel lines and electrical connectors, then unbolt and remove the CPI assembly. Install the new CPI by reversing the removal process, ensuring all connections are secure before reassembling and reconnecting the battery.