| Subject: | Proper Positioning of Luggage Carrier Cross Rails to Avoid Windrush |
| Models: | 2004-2005 Buick Rainier |
| 2003-2005 Chevrolet
TrailBlazer, TrailBlazer EXT |
| 2003-2005 GMC Envoy, Envoy XL |
| 2003-2004 Oldsmobile Bravada |
The purpose of this bulletin is to inform technicians of a windrush that may
occur when the luggage carrier cross rails are out of position.
Experience has shown that some customers may comment on windnoise generated
by the presence of luggage carrier (roof rack) cross rails. The disturbance becomes
more noticeable as the cross rails are placed in positions over the driver and passenger
seating areas.
The optimal installation locations of the cross rails to minimize wind disturbance
are with the front cross rail positioned in line with the rear edge of the rear door,
and the rear cross rail positioned 50.8 mm (2 in) forward of the rear
edge of the side rail. Vehicles ordered with production installed will be placed in
these locations.
Luggage carrier cross rails for a GMC Envoy XUV are a Regular Production Accessory
and will be received at your dealership separately for your installation prior to
delivery.
Please use these same cross rail positions when all luggage carrier cross rails
are installed during your pre-delivery inspection (PDI) process.
| • | Pull up on the lever on each side of the cross rail. |
| • | Place the front cross rail in line with the rear edge
of the door and push down on the lever to lock it in place. Refer to the illustration
above. |
| • | Place the rear cross rail 50 mm (2 in)
from the rear edge of the side rail and push down on the lever to lock it in place.
Refer to the illustration above. |
Inform the customer that this is the proper way to position the cross rail
when not in use.
