Silverado 1500 2WD V6-4.3L (2007)
A removable insert, shown above, was added to the outer groove of the upper side rail clamp to help prevent improper positioning from unintentionally
occurring.
Check that the clamps are properly installed using the correct groove in the upper side rail clamp. Correct positioning is detailed in the illustration above.
Cause #2
The condition may be caused by the tonneau bows not falling into proper position when the tonneau cover is rolled out. This cause would indicate that
repositioning on an upper side rail clamp is needed.
Correction #2
Note the position of the bows and use the appropriate repair below:
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If bows do not fit between the side rails and additional clearance is required, remove the clamp nearest the interference. Remove the orange strip to
allow access to the outer groove of the upper clamp. Reinstall the clamp, using the outer groove of the upper clamp.
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If bows are too loose, adjust the clamp nearest the bow with excessive clearance to the inner groove of the upper clamp.
Cause #3
This condition may be caused by a misalignment of the tonneau side rails and/or improper adjustment of the forward tension screws. The graphic above
shows a misalignment of the tonneau side rail (1) to the front of the pickup box (2).
Correction #3
1. Verify that the tonneau side rails are aligned with the front of the pickup box as shown above.
2. Ensure that the side rails are aligned with each other in the same fore/aft position (1) on the vehicle.
Note
