LaCrosse V6-3.8L (2009)
8. Pressurize the J 35800-A to 510 kPa (75 psi).
9. Start and idle the engine until it stalls due to lack of fuel. This should take approximately 15-20 minutes.
10. Turn the ignition to the OFF position.
11. Injectors should be flow-tested at this point. If further cleaning is needed, a repeat of the above procedure should be done.
When the injector restriction returns to zero, proceed to step 12.
12. Disconnect the J 35800-A from the fuel rail.
13. Reconnect the vehicle fuel pump relay and oil pressure switch connector, if equipped.
14. 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.
15. Start and idle the vehicle for an additional two minutes to ensure residual injector cleaner is flushed from the fuel rail and fuel lines.
16. 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.
17. Advise the customer to use only a Top Tier Detergent gasoline and to 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.
18. Road test the vehicle to verify that the customer concern has been corrected.
