2009 Chevrolet Tahoe Fuel Injector

The recommended torque is 9 Nm(80 lb in).

The recommended torque is 5 Nm(44 lb in).

You need to mark the connectors to their corresponding injectors to ensure correct reassembly, pull the CPA retainer on the connector up with 1 click, push the tab on the connector in and disconnect the fuel injector electrical connector.

You need to ensure that the CPA retainer is pulled out in 1 click, connect the electrical connectors to their corresponding injectors, push the CPA retainer in 1 click and ensure that the connector is secured.

You need to obtain J 35800-A, fill the injector cleaning tank with regular unleaded gasoline, electrically disable the vehicle fuel pump by removing the fuel pump relay and disconnecting the oil pressure switch connector, disconnect the fuel feed, and return line at the fuel rail, plug the fuel feed and return line, coming off the fuel rail with J37287, or J 42964-1, and J 42964-2 or J 42873-1, and J 42873-2 as appropriate for the fuel system, and connect the J 35800-A to the vehicle fuel rail and pressurize the J 35800-A to 510 kPa (75 psi). Next, you can start and idle the engine until it stalls due to lack of fuel. This should take approximately 15-20 minutes. You need to turn the ignition to the OFF position. Injectors should be flow-tested at this point. Then you can disconnect the J 35800-A from the fuel rail, reconnect the vehicle fuel pump relay and oil pressure switch connector, remove the J 37287, or J 42964-1 and J 42964-2, or J 42873-1 and J 42873-2 and reconnect the vehicle fuel feed and return lines, start and idle the vehicle for an additional two minutes to ensure residual injector cleaner is flushed from the fuel rail and fuel lines, pour the entire contents of GM Fuel System Treatment Plus, GM P/N 88861011 (Canadian P/N 88861012) into a nearly empty tank and advise the customer to refuel with up to 76 L (20-gal) of fuel and road test the vehicle to verify that the customer concern has been corrected.