Most Popular K Source for GMC Sierra

Simply installed and removed, these mirrors make all the difference when towing our 33’ trailer. They easily adjust to allow the best views of both the trailer and surrounding traffic. I highly recommend this product.

These mirrors are GREAT!! Exactly what I've been looking for. The fit, adjustability, look are awesome!! They look like they are factory installed. We tow a travel trailer (now with a 2011 Suburban) and vision from the passenger side has always been a problem. I have tried others from different sources on different tow vehicles: there is no comparison and they are cheaper too!! I am so glad I found etrailer.com. Just plug in your info and the solution to your problem is found!

I have 2 mid 2000’s model GM trucks. I’ve been looking for towing mirrors that wouldn’t break the bank and not look like ford mirrors slapped on them. I also did not want to lose the puddle lamps and auto fold function in one of them. These mirrors fit the bill. A little difficult to install in the cold, but a fabulous OE look and fit. I’m excited to see if they actually provide the sight lines I’m hoping for.

Nice mirror extensions! Look good on my 2003 Chevy duramax diesel. Perfect fit and very easy installation!! I have an overhead camper on my truck and this will sure prevent an accident changing lanes now with these on. I will take them off when l’m not camping. Easy to do. I live in the low desert where we get extremely hot during the summer and the heat could possibly weaken the plastic? I don’t want to ruin them.

These are Quality Mirrors, very sturdy. Took me about an hour on the first side, (learning curve) but the second side was 1/2 of that. Makes the truck look great and can't believe what a difference they make for field of view. As for function my truck was set up for the turn signal and power mirrors and they work great.

The service from etrailer was great like always. These mirrors are for our 03 Yukon for towing a travel trailer.They are condsiderably larger than the OEM mirrors in the collapsed position, the once extended they are almost twice as long. The only problem I had is the directions are a bit generic and tell you to pry the power window switch panel from the door panel to access the wiring. The picture supplied shows the lock panel being pried off which is correct but the power window is screwed in from the backside so the door panel needs to be removed and then reach behind it to remove the wiring.

Have held up well after more than a year of use. I feel safer towing and parking with these over the oem and other mirrors I have used

Fast shipping and the instructions on the website were fantastic. it worked just like the video said. Thank You it is a great product

Great mirrors, very pleased with them!

I love my mirrors thanks etrailer they was simple to put in no hassle at all

These mirrors are great quality very close to OEM . The installation went very well. I did take the door panel off to make it easier to get to the two lower fasteners, just to make sure I didn't loose the nuts inside door. There was very little vibration in the mirrors, I was a little worried about that by reading previous reviews. The mirrors held their positions, folded nicely when parked in tight spots. Everything said this is a great quality product

Great customer service! Free and fast shipping. The glass on the mirrors shake when your on the highway. I don't know of it's all towing mirrors or just these. Easy to install an fit perfect. Overall I'm happy with the product. Thanks e trailer for the great customer service.

I absolutely love these mirrors! Very easy to install, about 15 minutes per door. Adjustable from inside and no shake. Can't wait to pull the RV with these mirrors instead of the clamp-ons.

I installed these ksource mirrors on my 2006 Chevy Silverado and as advertised the installation was an exact fit. It took approximately 30 minutes per side to install. The mirrors were an exact fit and the wiring was an exact match. I recommend these mirrors for anyone pulling any type RV needing full side views and beyond on either side of the towing unit. Thanks etrailer once again.!!!

The replacement mirror I purchased is a great product. Although it’s not 100% exactly identical to the factory mirror it’s not noticeable to a average person because the mirror glass is all that’s slightly different, very slightly! The slightly difference in comparison outweighs the cost of a factory replacement by far.

Identical OEM Mirror. Not one thing was different. Perfect fit. Will use you again if I need a vehicle part. What sold me on the K-Source mirror was the many different views and measurements you provided and the technical info you gave on this product. I could have gotten one a little cheaper, but I feel that's just what I would of got. Thanks

After years of replacing mirrors from other sources I purchased a pair of these. There fantastic, plenty of adjustments. Got covid on vacation, really sick and did not properly install mirror. Not broken but scratched badly from asphalt at 55 mph. Purchased a replacement, scratched one is my spare.

These mirrors are good, but not great. I bought these because nothing else fits my 2004 Ford Expedition. They allow me to see around my trailer much better than the factory mirrors, but the have a slight vibration driving down the road. They also make a very noticeable noise from the wind going between the factory mirror and this product. Finally, one of the straps came off when I tightened it a bit too much, but didn't break. The picture below was done in humor (I took my trailer through a drive through, thought it was really funny, and had to take a picture. The picture is a good shot of the mirrors.)

These worked great on my wife's Yukon. Installation instructions were clear and direct. They held up very well traveling 75 mph down the interstate; No jostling around or coming loose. I loved the additional two mirrors. Having the three total different angles while pulling a trailer was extremely helpful. Would highly recommend this setup.

ordering was easy. the product was delivered quickly and without damage. I have a 2023 Colorado Z71 and was concerned about how the towing mirrors were going to attach to the tapered factory mirrors. the fit is superb. no movement during use so far.. I would recommend these to a friend.

Won’t stay locked in stoned position

Love these mirrors! Have had them on the truck now for a year and they work perfect and give you a lot more visibility than the standard short factory mirrors. No need for aftermarket extensions with these. Plus they slide out if you need even more visibility but we never had to use that alternative yet cause they work great just the way they are. We tow a tandem axel 7x14 cargo trailer and have plenty of visibility to see backing up and nicely down each side while driving. Much safer in heavy traffic. Installation was very simple and the mirrors bolted right on with exacting fit. I would totally recommend these if your needing better visibility over the small OEM mirrors for towing or just daily driving.

After reading lots of reviews on several mirrors, I decided to buy the K-Source Universal Towing Mirrors. Oh how I wish my truck could use the ones that slip over the existing mirrors! I was prepared for a fight, based on reviews, and boy did I get one! I truly needed a third hand when figuring out how to attach these. I was bound and determined that I could do this on my own. No mirrors were going to defeat me! I did ask my husband to come look at them. He started to help but I shewed him away. After a lot of words that don’t normally come out of my mouth and a few tears, the first one was on! Then I had to go do it again in the other side! I’m pretty sure the neighbors heard me yelling. But I persisted! Lo and behold, this 67 year old Grammy did it! It was clear they would not stay on by themselves, so I grabbed a couple of bungee cords and wrapped them around the housing and they aren’t going anywhere. I have left them on my truck. No way I’m going thru that every time we return from camping. I will take them off at the end of camping season. Delivery was really fast. I was disappointed that one box was brand new and the other was smashed and taped, an obvious return. I would have been very unhappy if there was a piece missing or if something was wrong since this was my first purchase with etrailer. Overall, the mirrors work, they do not shake and I find I don’t use the truck mirrors now. Very happy with my purchase.

Fitted on 2024 Toyota Tundra SR5 CrewMax Cab w/ Stock Mirrors No vibration issues with either mirror. Turned left and right side clip on mirrors vertical so the did not overlap truck mirrors. Right side no problem with attachment and was able to adjust truck mirror. Could also see father back along right side of a 24’ travel trailer than just looking in truck mirror. Don’t expect to see behind on right side any vehicles tucked up close. Left side mirror attachment had to be modified so I could adjust truck mirror without interfering with clip on mirror lower L “hooks”. I put a rubber blocks under the lower L hooks so they were low enough to get under truck mirror glass yet still clamp to truck mirror housing. A picture tells the story. 7,000 km/4,200 miles later and neither mirror has loosened or moved. No vibration or distortion. Yes, I ran 2 zip ties as safety “chains” from the back straps to truck mirror arm just in case, they’re barely snug. I recommend these.

Easy to install and greatly increase my rear view. I can now see past our 21ft camper. The led turn signals are also a nice option. Very happy with purchase.

Great company. I received exactly what I ordered. It fit nicely

The mirror was easy to install and the mirror does not vibrate when driving, so vision is clear and stable.

Working great wished i would have gotten them a long time ago

Working great wished i would have gotten them a long time ago

Exact fit

Work very well after being installed for a year. As other reviews mention they don’t sit level with out some washer shims on my 2006 GMC 2500HD. My wife likes the a bit higher and it doesn’t bother her that they are not level. Only reason not 5 stars is they require a fair bit of force to extend and retract would be nice if it had a smother sliding mechanism.

I purchased a set of these mirrors in September, 2013 for my 2003 Silverado 2500 HD crew cab. I use the truck for pulling trailers to different events during the warm months. I installed them without a problem (even though they came with no instructions). While testing out my new mirrors, I immediately noticed that the upper part of the passenger mirror (the part that is powered by the electric motor) had a significant element of vibration at highway speeds. I contacted eTrailer, who arranged to have a replacement mirror sent to me. Since it was a single mirror, and not part of a set, it took K-Source a couple of weeks to get the replacement mirror to me. I installed the new mirror, but my towing season was over and I never tested it on the highway. This April, I start towing again. The mirror vibrates as bad as the one that was replaced! eTrailer put me in touch with K-Source. Their response was "Sorry, the mirror has a 90-day warranty. You are outside the warranty period". REALLY! After multiple e-mails and phone calls to K-Source, they agreed to "assess" the mirror if I paid to have it shipped to them. They shipped it back to me and said that there was nothing wrong with the mirror, that I must have installed it incorrectly. REALLY! Only the upper pane vibrates, not the body of the mirror or the lower wide-angle mirror. They would not replace it. If you are in the market for this type of mirror, I would suggest you look elsewhere.

Towing Extendable after market Mirror fit perfectly and looks good now. Time will tell more. Easy mounting and good instructions. Only concern was slow shipping with UPS transfer to USPS.

No comment needed

These towing mirrors were exactly what I wanted. They fit my 2001 GMC Yukon XL perfectly, utilizing the existing hardware for adjustments and defrost. They extend easily (manually) when towing our pontoon boat, and collapse (manually) against the vehicle when going through a car wash. I should have purchased these years ago, instead of waiting until one of the original ones broke!

Love the mirrors, exactly what I needed. ETrailer would get 5 stars if not for a bit of a fit problem. Both sides fail to make contact with the window molding at the top of the triangle (pics). A separation angle begins just above the main body and pulls further away from the window molding to the tip of the triangle. The passenger side is gapped worse 1/4" than the driver side but both will undoubtedly allow water seepage into the door frame. Would hate to have to caulk these things but tightening and shimming with washers has not worked to change angles at top.Thinking over solutions to save this install.

I have a 2016 Silverado 2500 HD LTZ with factory mirrors including heat, turn signal and electric adjustments. Have been towing a 24 foot Travel trailer and the factory mirrors are adequate. Am used to swerving a little to see behind the trailer before changing lanes. Am now going to tow a thirty foot trailer and decided the mirrors would not do. Looked for an oem towing mirror but was shocked by the price. $[XX] plus for one that has all the functions of the LTZ mirror. Looked around, watched videos, read reviews and decided to puchase these mirrors. Got them today and they installed in a snap. Have yet to use them but will be shortly. Initial impression is that they will provide the extra vision needed to pull this trailer. Only complaint was the condition of the package received by USPS. The product was shipped in the manufacturer packaging which was probably not a good choice. Fortunately the mirrors were undamaged as can be seen in the photos. In any case, the mirrors fit and seem to be well constructed. Hence the five stars. Time will tell if I made a good choice.

These could be the best mirror extensions I’ve ever owned. They are totally worth the cost. Scratching of the factory is an issue during installation and dismount. I used helicopter tape to minimize the problem spots.

I ordered K-Source towing mirrors.. back ordered but eTrailer worked magic.. I did read one line in the instructions, (DON"T DROP A BOLT INSIDE THE DOOR PANEL) Installation was 20 minutes start to finish with a 10mm deep socket/ratchet and screwdriver. I did NOT remove door panels, you can bend them back far enough to reach all three bolts. Remove the triangle plug on top of the door that's behind the mounting bolts for the mirrors. Remove three 10mm nuts and swapped mirrors. It could go faster with another set of hands to hold the mirror as you install the bolts. Note1. Be sure to use the foam piece that comes with the new mirrors, it's a gasket to help make the whole thing fit. I think that's photo number three. End result, these mirrors do yield to pressure to make them swing back if you're in a tight spot. Road trip is next to see how much they may move. I'm very impressed with the quality construction, they feel/look top notch. These are OEM factory quality indeed. Thanks again Samantha G..

Works great