Way back in 2023, GM Authority reported that some Chevy Colorado and GMC Canyon owners were experiencing frustrating roof denting issues. The issue was tied to roof flexing, which could lead to dents after the vehicle was run through a touchless car wash service. Now, GM has developed a fix for the roof dent issue by applying a new roof structure to the Chevy Colorado and GMC Canyon at the factory.
As covered before, the dented roof issue stems from flex in the roof panel on the Chevy Colorado and GMC Canyon, in particular from the high-pressure drier typically used at the end of touchless car washing services. Affected vehicles may produce a loud popping sound, also known as “oil canning,” when passing through an automatic car wash. GM has issued fixes for this issue before, but now, the automaker will apply this fix to new units straight from the factory. The fix is also available for third-generation Chevy Colorado and GMC Canyon trucks produced between the 2023 and 2025 model years, specifically models without a sunroof that were built before February 3rd, 2025.
To fix the issue, GM will reinforce the roof panel by adding stiffening patches and installing a roof bow, all of which is designed to prevent excessive flexing. GM recommends that any units that need paint or bodywork on the roof should have this completed before starting a repair.
Essentially, stiffening patches are installed at five locations near the front of the roof. If these patches were previously added as part of an earlier repair, they can remain in place when installing the roof bow.
To install the roof bow, five holes must be pre-drilled before using the bow as a template, marking and drilling matching holes in the underside of the roof panel. Once the holes are prepared, structural adhesive is applied to both ends of the bow, and vibration control material is applied as well, after which the roof bow is then secured to the vehicle using rivets.
After the stiffening patches and roof bow are installed, the headliner installed. Repaired units should be verified to ensure the roof no longer flexes under pressure.
Comments
How did that roof panel even make it to production in the first place? Truly embarrassing but at least they fixed it. I am surprised they didn’t use thicker metal
Any idea on when GM will send out an updated ( 23-NA-209 ) bulletin to dealers to get this new roof bow installed?
The bulletin has already been updated. Just had my dealership order the parts yesterday.
Great. Let’s hope they admit that Silverados have dented roofs too and they need to be fixed.
That is the first I am hearing about them and I follow them closely.
Down voting my comment is hilarious. Current gen Silverados (sans sunroof) have weak roofs that get dented by carwash blowers. Look about 7″ back from the center of the windshield. Every single one that uses these carwashes are dented, including my very own brand new Silverado.
Have a 23 Silverado ( sans sunroof ) that as of yet the carwash drying blower hasn’t dented my roof. I suppose the force and volume of air may be different at the carwash I use. Anyway I agree with you that GM should repair any roof damaged this way.
Cheers
You speak truth!! My Silverado has been a terrible truck after years of Rams. This issue is just one of many, but I have to hold my headliner up every time I go through a car wash. I recognize they are new at building pickups so maybe with time they will learn.
I can’t believe it took 2 years to do this.
Confirmed my 2025 Z71 with a build date of 2/1/25 has the roof bow installed from the factory.
Now on to fixing the glitchy electronics…. Maybe by 2030 they’ll have that worked out.
No they won’t , because by 2030 there will be more onboard computers & more electronics to glitch & fail
Do they send out notifications to you in the mail? This is the first I’ve heard about it.
Any 2021 Tahoe owners having a problem with Paint peeling—My body shop found this after they had to replace the driver side rear quarter panel (was hit)–when they took out the glass the “raw metal” was showing…. I have been told that the factory has 45 minutes to prime the vehicle after the car body comes out of the “DIP”….
I have been told by GM so far “too bad so sad”….not covered by warranty……for a 40 month old Tahoe. CRAZY!! My guess is not many owners will find this as it is “HIDDEN” ? anyone else having issues
Now, why can’t GMC come up with a fix for the steering column rattle in my 2024 Canyon Denali?
I have a 2015 Z71 Colorado it’s had the same steering column rattle since it was 6 months old.
Having been a GM assembly plant employee for 34 years, I can believe this took 2 years to get fixed.
But it still really disappoints me…
I need to have them order parts for my ’24.
I have one Gm left. My 17 Tahoe off to Carvarna on Sat.
I have a 2024 Equinox EV with the same problem. Every time I go through the car wash and get to the dryer, the roof makes the bang. I haven’t heard a recall for the Equinox EV.
I believe GM uses the Lean Six Sigma process. Part of this process is a Design Failure Mode Effects Analysis (DFMEA) and a validation plan. If done properly this should have caught this in the design stage. Would have caught a lot of other defects as well. The process itself is proven. The variable is the people writing and reviewing these documents. A lot of engineers I worked with did not do a good job on these documents especially the validation plan.
called my chevy dealer never heard of roofs that buckle or a recall ????? nothing but problems with this piece of junk