2014+ Mud Guards / Flaps

Eddie 70 · November 8, 2015

Just added WeatherTech No-Drill to mine today, front and back.

paumat · November 14, 2015

Modified my front Weathertech mudguards to provide better protection as winter approaches.

By adding a section of a universal mud guard to the Weathertech mudguard I believe there is adequate protection. This additional mudguard, installed with stainless hardware added 4" in length.

Good idea. Did you use stainless pop rivets?

Truckin 55 · November 14, 2015

I didn't use the anchors supplied with the flat GM Mud guards , they aligned with the holes previously drilled for the Molded set Dealer installed. The rear Flaps had clips backside of fender lip. In a few months may want to remove the Molded set and check for crud and specks of surface rust like I found .

Shredzy · November 14, 2015

Good idea. Did you use stainless pop rivets?

I used stainless #8 Philips-head bolts with a nylon locknut.

Figured if I used rivets that they would pull the added mudguard piece too tight to the Weathertech mudguard and not fit or look too good where with the screw & locknut I was able to tighten it to what I thought was sufficient.

paumat · November 17, 2015

I used stainless #8 Philips-head bolts with a nylon locknut.

Figured if I used rivets that they would pull the added mudguard piece too tight to the Weathertech mudguard and not fit or look too good where with the screw & locknut I was able to tighten it to what I thought was sufficient.

Is the extension piece plastic or rubber

Shredzy · November 17, 2015

Is the extension piece plastic or rubber

It's plastic, just took some flat, universal truck mudflaps and cut them to the size.

One could use rubber as well, may be a little bit more flexible, but either will be an improvement for coverage.

SierraMyst · December 29, 2015

So the dealer threw in the OEM mud flaps with my truck, and it was late and I was driving the truck back home, so stupid me told them not to worry about installing them.

Started the install only to realized that isn't just a "replace the existing screws/holes" like every other mudflap I've ever intalled. If had known that these required drilling and "rivnuts" I would have stayed and let the dealer do it.

So my question is, what was the consensus on the front rivnuts?

Should I buy the tool?

Theres the nut and bolt compression method seen on the previous video.

There's the method of drilling a hole just wide enough for the rivnut to get hammer tapped in tightly and let the screw do the expanding of the rivnut.

Use self tapping stainless metal screws.

Or let the dealer install them which sucks for me because it would have been done for free at the time of purchase.

What do you all recommend is the best method? I appreciate any help with this since I have never worked with a rivnut before.

Thx

crewl1 · December 29, 2015

So the dealer threw in the OEM mud flaps with my truck, and it was late and I was driving the truck back home, so stupid me told them not to worry about installing them.

Started the install only to realized that isn't just a "replace the existing screws/holes" like every other mudflap I've ever intalled. If had known that these required drilling and "rivnuts" I would have stayed and let the dealer do it.

So my question is, what was the consensus on the front rivnuts?

Should I buy the tool?

Theres the nut and bolt compression method seen on the previous video.

There's the method of drilling a hole just wide enough for the rivnut to get hammer tapped in tightly and let the screw do the expanding of the rivnut.

Use self tapping stainless metal screws.

Or let the dealer install them which sucks for me because it would have been done for free at the time of purchase.

What do you all recommend is the best method? I appreciate any help with this since I have never worked with a rivnut before.

Thx

Go back to he dealer and tell your salesperson to have them installed for you for free. You just spent many $$$$ with him and he got a nice commission.

SierraMyst · December 29, 2015

Go back to he dealer and tell your salesperson to have them installed for you for free. You just spent many $$$$ with him and he got a nice commission.

Not worth it.

I'm in VA, they're in PA. It would be 3 hour drive.

BulldogSilverado · January 4, 2016

Installed the WeatherTech no drill mud guards. Love them. Went on a muddy/dirt road and gravel road since install, no issues so far. Can't beat the price -- would do again.

Bstevens1084 · January 5, 2016

So the dealer threw in the OEM mud flaps with my truck, and it was late and I was driving the truck back home, so stupid me told them not to worry about installing them.

Started the install only to realized that isn't just a "replace the existing screws/holes" like every other mudflap I've ever intalled. If had known that these required drilling and "rivnuts" I would have stayed and let the dealer do it.

So my question is, what was the consensus on the front rivnuts?

Should I buy the tool?

Theres the nut and bolt compression method seen on the previous video.

There's the method of drilling a hole just wide enough for the rivnut to get hammer tapped in tightly and let the screw do the expanding of the rivnut.

Use self tapping stainless metal screws.

Or let the dealer install them which sucks for me because it would have been done for free at the time of purchase.

What do you all recommend is the best method? I appreciate any help with this since I have never worked with a rivnut before.

Thx

i purchased the OEM mudflaps and realized the same thing. I said screw buying the tool and wasn't going to pay for the dealer to install them, I just bought some small trim screws from my local car quest and just screwed them into the plastic. the 2 bottom screws you remove and reuse will secure them and the 2 extra screws are just to secure the top. I even put one extra screw

underneath since there was a hole there as well.

Aubie_01 · January 5, 2016

Installed the WeatherTech no drill mud guards. Love them. Went on a muddy/dirt road and gravel road since install, no issues so far. Can't beat the price -- would do again.

How did they do for keeping mud / dirt off the lower portion of the truck?

SierraMyst · January 5, 2016

i purchased the OEM mudflaps and realized the same thing. I said screw buying the tool and wasn't going to pay for the dealer to install them, I just bought some small trim screws from my local car quest and just screwed them into the plastic. the 2 bottom screws you remove and reuse will secure them and the 2 extra screws are just to secure the top. I even put one extra screw

underneath since there was a hole there as well.

I ended up doing the nut, bolt, washer method since it's pretty much what the directions said to do. I realized that the dealership special service tool was just high grade bolt and nut.

The first nut set I got from the dealership was crap, the bolt snapped during compression. Screwed the rivnut shape up. I banged the rivnut back in shape in my vise and picked up a high grade M6 bolt, M7 flanged nut and a M7 washer at Home Depot.

Worked prefectly.

Put flanged nut on the bolt, then the washer, then the rivnut.

Tightened it down. Put the assembly in the hole.

Put a crescent wrench on the flange bolt putting pressure on the flanges with the wrench to keep the assembly in place in the hole.

Took a socket wrench and turned the nut.

FYI, directions say don't turn the nut more than 3 full turns. The rivnut is flimsy and you don't want it breaking a apart.

You'll know your done because the whole assembly when only held by the crescent wrench is wobbly. As its gets tighter, the whole assembly will firm up and tighten down.

Lastly, make sure you use the crescent wrench and socket both to turn the nut back out. This will keep the rivnut from going loose.

The drivers side took 2 hours between figuring out the assembly, breaking the nut, going to home depot, buying the high grade nuts ($1.80 for all parts by the way) and going home and putting it on.

The passenger side took 10 mins. Guess having the right tools makes a difference.