EI08036 - Front Windshield Glass Stress Cracks (Engineering Information). Chevrolet Impala 2008

Subject:

EI08036 -- Front Windshield Glass Stress Cracks (Engineering Information)

Models:

2008 Chevrolet Impala

Attention:

Proceed with this bulletin ONLY if the customer has commented about this concern AND the EI number is listed in GMVIS, otherwise disregard the bulletin and proceed with diagnostics found in the published service information. THIS IS NOT A RECALL. Refer to Corporate Bulletin Number 04-00-89-053B for more details on the use of Engineering Information Bulletins.

Condition

Some customers may comment on a windshield crack. Ask the customer to provide additional information about the crack. (Was something noticed before the crack formed? Did the customer see it form? Was the car parked, on rough roads, hot/cold temperatures, slammed car door, etc?)

Instructions

Important: Using a magnifying glass and a flashlight, verify that the crack occurred due to stress in the glass. Inspect for any signs of impact to the windshield. Disregard this bulletin if the crack was not caused by stress.

If a vehicle is encountered with the above concern, please follow these steps:

Verify that the VIN and mileage are accurate.
Record the build date of the vehicle.
Gather the following details about the stress crack:

•	Did the crack originate at one of the edges of the windshield (A-pillar, cowl, roof) or away from all edges?

•	If cracking is not at an edge, how far in and where from a reference point does the crack start?

•	What direction does the crack run (horizontal, vertical or diagonal)?

Take digital pictures of the stress crack. If you do not have a digital camera, use the provided windshield graphic and mark the location of the crack in the windshield.
Contact George Szegedy, GM Warranty Engineer at 1-248-676-7653 if the vehicle is located in Michigan. If the vehicle is not located in Michigan, please complete the Dealer/Service Questionnaire and e-mail or fax the completed form and pictures to: george.szegedy@gm.com or fax to 1-248-685-6140.

GM Engineering Visits

GM Engineering may visit dealerships near Detroit, Michigan (within an hour's drive time). GM Engineer may make arrangements to view the glass prior to removal. In all cases, a Feedback/Disposition will be made within 48 hours of a phone call.

Warranty Information

Please claim the following labor operation code when complying with this Engineering Information request.

Labor Operation	Description	Labor Time
B9815*	Engineering Information - Windshield Stress Crack	2.0 hrs
Coverage Code: Sublet S2
*This is a unique labor operation for bulletin use only. It will not be published in the Labor Time Guide.

Dealer/Service Questionnaire

Windshields - Stress Cracks / Distortion
Dealer service contact name & phone number: Dealer city, state: VIN (last 8 digits): Vehicle build date: RO#: Mileage:
What is the customer complaint?
Describe the defect in detail. If this is a stress crack, where did the crack originate (driver or passenger side?) Top/bottom/side edge? How far from two edges? Which direction does the crack run?
Record everything printed on the Glass Monogram:
Circle the defect with a grease pencil. If you have a digital camera, take a few pictures of the defect (close and far - show the whole windshield).
Just before cutting out glass, check: Does the glass touch metal at any point (check all edges)? If glass is making hard contact with metal at any location, write down this information and call George Szegedy at 1-248-676-7653. If you have a digital camera and glass is touching metal, take some pictures (near/far). If the sublet company will not do this work, please complete the checks at the dealership prior to sending vehicle out to sublet company. Charge any labor to GM.
After cutting out the glass, look at the urethane bead remaining on the body. Is it uniform in thickness all the way around? If it is not, describe variations (where is it extra thin/thick)?
e-mail or fax this completed form & pictures to: George Szegedy GM Warranty Engineering - Cars Phone: (248) 676-7653 Fax: (248) 685-6140 george.szegedy@gm.com

Windshields - Stress Cracks / Distortion

Dealer service contact name & phone number:

Dealer city, state:

VIN (last 8 digits):

Vehicle build date:

RO#:

Mileage:

What is the customer complaint?

Describe the defect in detail.

If this is a stress crack, where did the crack originate (driver or passenger side?) Top/bottom/side edge? How far from two edges? Which direction does the crack run?

Record everything printed on the Glass Monogram:

Circle the defect with a grease pencil. If you have a digital camera, take a few pictures of the defect (close and far - show the whole windshield).

Just before cutting out glass, check:

Does the glass touch metal at any point (check all edges)? If glass is making hard contact with metal at any location, write down this information and call George Szegedy at 1-248-676-7653. If you have a digital camera and glass is touching metal, take some pictures (near/far).

If the sublet company will not do this work, please complete the checks at the dealership prior to sending vehicle out to sublet company. Charge any labor to GM.

After cutting out the glass, look at the urethane bead remaining on the body. Is it uniform in thickness all the way around? If it is not, describe variations (where is it extra thin/thick)?

e-mail or fax this completed form & pictures to:

George Szegedy

GM Warranty Engineering - Cars

Phone: (248) 676-7653

Fax: (248) 685-6140

george.szegedy@gm.com