Technical Service Bulletins - Rattle Noises From Under Vehicle & Front Whistle Noises
Body - Rattle Noise From Under Vehicle
Bulletin No.: 08-08-59-002
Date: July 18, 2008
TECHNICAL
Subject:
Rattle, Noise from Inside Vehicle (Secure Wire Harness Connector by ABS Brake Line) Models:
2006-2008 Chevrolet Colorado
2006-2008 GMC Canyon Condition
Some customers may comment on a rattle, noise from under the vehicle.
Cause
This may be caused by interaction between the connector and the ABS brake line under the hood. The connector rosebud may not be fully seated to the body.
![Image]()
The figure above shows the location of the connector. Note that the connector rosebud (1) is out of place. In most cases, the connector will be partially seated, causing a possible interaction between the connector and the ABS brake line. Correction
Technicians are to fully seat the connector in place and verify that there is clearance between the connector and brake line to avoid future contact.
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Body - Wind Noise/Whistling From Vehicle Front
Bulletin No.: 07-08-58-003
Date: October 09, 2007
TECHNICAL
Subject:
Windnoise or High Pitched Whistle Noise Heard from Front of Vehicle While Driving at Highway Speeds (Apply Adhesive Shim Stock) Models:
2004 - 2008 Chevrolet Colorado
2004 - 2008 GMC Canyon Condition
Some customers may comment on a windnoise or high pitched whistle noise heard from the front of the vehicle while driving at highway speeds.
Cause
This condition may be caused by a rush of air flowing over the front grille into a gap found in the lower portion of the front park turn signal lamp housing and lens.
Correction
![Image]()
Use masking tape to tape off the gap (1) between the grille and the lower left and right park turn signal lens. Road test the vehicle and determine the source of the windnoise.
If the park turn signal lamp is not the source of the windnoise, continue to diagnose and repair the windnoise. Refer to Interior and Exterior Windnoise in SI.
If the windnoise is eliminated, return to the shop and proceed to Step 2.
Open the hood.
![Image]()
Disconnect the front park turn signal lamp electrical connector (1) from the front wiring harness connector. Then remove the lamp assembly by using a screwdriver to release the outboard retaining clip (2) from the front inner fender.
Place the park turn signal lamp assembly with the bottom side up on a work bench.
![Image]()
Clean the center edge (1) of the park turn signal lamp where the housing meets the lens with denatured alcohol.
Cut a piece of Kent Automotive(R) Adhesive Shim Stock, P/N 46480 or equivalent to 6 mm (1/4 in) width by 47 cm (18-1/2 in) length.
![Image]()
Apply the adhesive shim stock (1) to the bottom side of the park turn signal lamp around the entire center edge where the housing meets the lens.
![Image]()
Install the park turn signal lamp to the vehicle by inserting the two retaining tabs (1) toward the center of the grille assembly. Then seat the park turn signal lamp outboard retaining clip by pushing the lamp assembly back into the front inner fender. Connect the park turn signal lamp electrical connector to the front wiring harness connector.
Repeat steps 29 for the opposite front park turn signal lamp.
Close the hood.
Verify that the condition is fixed.
![Image]()
Parts Information
Adhesive Back Shim Stock can be purchased by calling 1-888-YES KENT (1-888-937-5368) or Online at www.kent-automotive.com. This closed cell foam is sold in a 30 foot roll. This roll will service nine vehicles. Please return any unused portion to parts inventory for future use.
Body - Rattle Noise From Under Vehicle
Bulletin No.: 08-08-59-002
Date: July 18, 2008
TECHNICAL
Subject:
Rattle, Noise from Inside Vehicle (Secure Wire Harness Connector by ABS Brake Line) Models:
2006-2008 Chevrolet Colorado
2006-2008 GMC Canyon Condition
Some customers may comment on a rattle, noise from under the vehicle.
Cause
This may be caused by interaction between the connector and the ABS brake line under the hood. The connector rosebud may not be fully seated to the body.
The figure above shows the location of the connector. Note that the connector rosebud (1) is out of place. In most cases, the connector will be partially seated, causing a possible interaction between the connector and the ABS brake line. Correction
Technicians are to fully seat the connector in place and verify that there is clearance between the connector and brake line to avoid future contact.
====================================================================
Body - Wind Noise/Whistling From Vehicle Front
Bulletin No.: 07-08-58-003
Date: October 09, 2007
TECHNICAL
Subject:
Windnoise or High Pitched Whistle Noise Heard from Front of Vehicle While Driving at Highway Speeds (Apply Adhesive Shim Stock) Models:
2004 - 2008 Chevrolet Colorado
2004 - 2008 GMC Canyon Condition
Some customers may comment on a windnoise or high pitched whistle noise heard from the front of the vehicle while driving at highway speeds.
Cause
This condition may be caused by a rush of air flowing over the front grille into a gap found in the lower portion of the front park turn signal lamp housing and lens.
Correction
Use masking tape to tape off the gap (1) between the grille and the lower left and right park turn signal lens. Road test the vehicle and determine the source of the windnoise.
If the park turn signal lamp is not the source of the windnoise, continue to diagnose and repair the windnoise. Refer to Interior and Exterior Windnoise in SI.
If the windnoise is eliminated, return to the shop and proceed to Step 2.
Open the hood.
Disconnect the front park turn signal lamp electrical connector (1) from the front wiring harness connector. Then remove the lamp assembly by using a screwdriver to release the outboard retaining clip (2) from the front inner fender.
Place the park turn signal lamp assembly with the bottom side up on a work bench.
Clean the center edge (1) of the park turn signal lamp where the housing meets the lens with denatured alcohol.
Cut a piece of Kent Automotive(R) Adhesive Shim Stock, P/N 46480 or equivalent to 6 mm (1/4 in) width by 47 cm (18-1/2 in) length.
Apply the adhesive shim stock (1) to the bottom side of the park turn signal lamp around the entire center edge where the housing meets the lens.
Install the park turn signal lamp to the vehicle by inserting the two retaining tabs (1) toward the center of the grille assembly. Then seat the park turn signal lamp outboard retaining clip by pushing the lamp assembly back into the front inner fender. Connect the park turn signal lamp electrical connector to the front wiring harness connector.
Repeat steps 29 for the opposite front park turn signal lamp.
Close the hood.
Verify that the condition is fixed.
Parts Information
Adhesive Back Shim Stock can be purchased by calling 1-888-YES KENT (1-888-937-5368) or Online at www.kent-automotive.com. This closed cell foam is sold in a 30 foot roll. This roll will service nine vehicles. Please return any unused portion to parts inventory for future use.
