Campaign - Coolant Surge Tank Fracture

SERVICE UPDATE

Bulletin No.: 10025

Date: June 16, 2010

Subject: 10025 - Service Update for Inventory and Customer Vehicles - Coolant Surge Tank Fracture - Expires with Base Warranty

Models:
2010 Buick LaCrosse

This service update includes vehicles in dealer inventory and customer vehicles that return to the dealership for any reason. It will expire at the end of the involved vehicle's New Vehicle Limited Warranty period.

Purpose

This bulletin provides a service procedure to replace the coolant surge tank on certain 2010 model year Buick LaCrosse vehicles. These vehicles may have a coolant surge tank that was not built to GM's specification. These tanks could crack and begin to leak fluid. If enough fluid were to leak out, the engine could overheat, causing damage to the engine.

This service procedure should be completed as soon as possible on involved vehicles currently in dealer inventory and customer vehicles that return to the dealer for any type of service during the New Vehicle Limited Warranty coverage period.

Vehicles Involved

A list of involved vehicles currently in dealer inventory is available on the "Service Update Bulletin Information" link under the "Service" tab in GM GlobalConnect (US) or attached to the GlobalConnect message (Canada) used to release this bulletin. Customer vehicles that return for service, for any reason, and are still covered under the vehicle's base warranty, and are within the VIN breakpoints provided below, should be checked for vehicle eligibility in the appropriate system listed below.





Note
Dealers are to confirm vehicle eligibility prior to beginning repairs by using the Investigate Vehicle History link. Not all vehicles within the above breakpoints may be involved.

Parts Information

Parts required to complete this service update are to be obtained from General Motors Customer Care and Aftersales (GMCC&A). Please refer to your "involved vehicles listing" before ordering parts. Normal orders should be placed on a DRO = Daily Replenishment Order. In an emergency situation, parts should be ordered on a CSO = Customer Special Order.





Service Procedure





1. Remove the battery tray cover (1).
2. Disconnect the negative battery cable.





3. Remove the fuse assembly hold-down clips (1).
4. Disconnect the positive battery cable.





5. Remove the alternator lead cable (1) from the fuse assembly (2).
6. Pull the fuse assembly (2) up and back and place it out of the way of the surge tank work area.





7. Remove the battery hold down.
8. Remove the battery.





9. Release the ECM retaining tab (1) and place the ECM away from the surge tank work area (2) as shown in the illustration.





10. Remove the bolts from the bottom of the battery tray.
11. Remove the battery tray.

Warning

To avoid being burned, do not remove the radiator cap or surge tank cap while the engine is hot. The cooling system will release scalding fluid and steam under pressure if radiator cap or surge tank cap is removed while the engine and radiator are still hot.

12. Remove the surge tank pressure cap from the surge tank.





13. Place a hose clamp tool on the surge tank outlet hose (bottom hose) (1). Refer to the illustration.
14. Remove the surge tank outlet hose from the surge tank.
15. Remove the surge tank inlet hose (top hose) from the surge tank.





16. Remove the wire retainer clip (1) from the top of the surge tank.
17. Remove the coolant surge tank retainer clip (2) from the side of the surge tank.
18. Pull the surge tank forward and remove the surge tank.

Note
Perform Steps 19-20 on a work bench.

19. Transfer the coolant from the old surge tank to the new surge tank.





20. Install the new surge tank.

1. Install the coolant surge tank retainer clip (2) to the side of the coolant tank.
2. Install the wire retainer clip (1) to the top of the surge tank.
3. Install the outlet surge tank hose to the coolant surge tank.
4. Install the inlet surge tank hose to the coolant surge tank.
5. Ensure that the surge tank coolant level is correct.
6. Install the surge tank cap onto the surge tank.





21. Install the battery tray.





22. Install/engage the ECM in the ECM retaining tab.
23. Install the battery.





24. Install the battery hold down (1).





25. Install the fuse assembly (2).
26. Install the alternator lead cable (1).





27. Install the fuse assembly hold-down clips (1).
28. Install the positive battery cable.
29. Install the negative battery cable.





30. Install the battery tray cover (1).

Claim Information





1. Submit a claim using the table above.





Disclaimer