Does Weathertech ImpactLiner part # WT99KF Fit 2025 GMC Sierra 1500 with CarbonPro Bed

Updated 03/27/2025 | Published 03/22/2025

Question:

I have a 2025 1500 Denali Ultimate with a carbonpro bed 58. Does this mat fit? There does not appear to be ANY accessories for this bed...cover....boxs....mats....nothing. Its not clear on any site if the Sierra 1500 accessories are compatible. Some sites typically indicate w/o carbonpro. I did locate a tonneau cover that appears to be compatible....i hope. Thanks! Rich

asked by: Rich

Expert Reply:

Hey Rich, yes the Weathertech ImpactLiner part # WT99KF is a fit for your 2025 GMC Sierra 1500 5-3/4 foot bed that has the Carbonpro bed. Yeah this bed style is pretty odd for picking out accessories for. Only certain tonneau covers can work with them so hopefully what you did find is compatible.

expert reply by: Jameson C

Rich

3/27/2025

Jameson, Thanks for your reply According to Weathertech support they don't make a liner that's CarbonPro compatible. The cover does appear to be the shape of the bed so I will give it a go. Just an FYI in case someone inquires. The BakFlup MX4 cover states its CarbonPro friendly....this is partly true. I installed the cover and the rails have a unique installation that technically works...but has a major issue. The rails installed fine with some drilling involved. However, when I went to close the cover the latches do not catch. The rails have slots in them that engage to the mounting bolts. When the bolts are tightened the rails tilt inward into the bed preventing the latches to catch properly. When I loosen the bolts, and I slide the rail out of the mounting slots, the rail fits properly and the cover latches. I thought I might have drilled the holes to low but they match up to the cutout clip locations in the bed. I determined the slots in the rail were cut to high and need to be lowered to meet the mounting specs of the bed. Bakflip support thinks the rails were not manufactured properly and they are sending me a new set of rails. As it stands the cover functions but does not seat against the bulkhead and leaves an opening as a potential leak point. Also the rails are not engaging the slots leaving a security risk. I have my doubts the replacements will resolve the issue but hope for the best. Thanks Rich