05 Chevrolet, GMC and Buick Mid-Size Utilities Wind Noise from Roof Rack - kw GMT305 GMT360 GMT370

The following diagnosis might be helpful if the vehicle exhibits the symptom described in the PI.

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Roof rack cross rail wind disturbance. Veriy the cross rails are placed into the correct positions.

Experience has shown that some customers may comment about windnoise generated by the presence of 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 rear door and the rear cross rail is 2 inches forward of the rear edge of the side rail. Vehicles ordered with production installed cross rails will be placed in these locations. Roof rack cross rails for a GMC XUVs 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 roof rack cross rails are installed during your predelivery inspection process.

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Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance.

(05 Chevrolet Trailblazer and Trailblazer EXT) and (05 GMC Envoy, Envoy XL and Envoy XUV) and (05 Buick Rainier )

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