H3 L5-3.7L (2007)
Pressurize the J 35800-A to 510 kPa (75 psi).
Start and idle the engine until it stalls, due to lack of fuel. This should take approximately 15-20 minutes.
Turn the ignition to the OFF position.
Disconnect the J 35800-A from the fuel rail.
Reconnect the vehicle fuel pump relay and oil pressure switch connector, if equipped.
Remove the J 37287, J 42873 or J 42964 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 (P/N 88861011 [in Canada, P/N 88861012]) into the tank and advise the customer to fill the
tank.
Review the benefits of using Top Tier Detergent gasoline with the customer and recommend that they add a bottle of GM Fuel System Treatment Plus to
the fuel tank at every oil change. Regular use of GM Fuel System Treatment Plus should keep the customer from having to repeat the injector cleaning
procedure.
Road test the vehicle to verify that the customer concern has been corrected.
