cab height

Gary Wiles · February 9, 2022

Does anybody know if the cab height spec given on the gm website for the hd trucks includes the sharkfin antenna?

SeanSmith · February 9, 2022

Good question. Following. I want to get a front end level done on mine, but afraid it will not allow me to park in the garage at work.

bird_dog0347 · February 9, 2022

I don't know the exact height, but the carwash I go through says 7'2" on the clearance bar and it doesn't hit. Mine is a 2020 HD Crew Cab Z71 with stock ride height.

finn5033 · February 9, 2022

I'm pretty sure the antenna on our trucks is just a tad higher than the shark fin. Grab a tape measure and measure from the ground to the tip of the antenna. that's the measurement you need

Gary Wiles · February 9, 2022

My problem is the garage door is 81 3/4" high to the weatherstrip/doorstop. My '07 Dodge 3500 Quad 4x4 clears fine, but I see all the new trucks are at least a couple inches taller. Looking at the GMC 3500HD 4x4 to replace it but have to know if it will fit! Can't get an answer from the dealer as to whether the sharkfin is included in the cab height spec. They say to take one home to try fit but of course there's nothing on the lot.

Another JR · February 10, 2022

There was a thread just a few weeks ago on exactly this issue and a few of us posted measurements.

The shark fin is not more than 1/4 to 1/2 inch taller than the highest spot on the cab roof when the truck is unloaded. As you load the bed and the rear settles, the cab high point drops more than the shark fin, but the fin doesn’t move up.

I have a GMC 3500hd SRW CCLB SLT gas with the 18 inch wheels and stock tires. Unloaded my truck is definitely slightly less than 80.5 inches tall in overall height including the shark fin. The 20 inch wheels and associated stock tires would make it about 1/2 inch taller.

Edited February 10, 2022 by Another JR

Gary Wiles · February 10, 2022

My problem is the garage door is 81 3/4" high to the weatherstrip/doorstop. My '07 Dodge 3500 Quad 4x4 clears fine, but I see all the new trucks are at least a couple inches taller. Looking at the GMC 3500HD 4x4 to replace it but have to know if it will fit! Can't get an answer from the dealer as to whether the sharkfin is included in the cab height spec. They say to take one home to try fit but of course there's nothing on the lot.

Gary Wiles · February 10, 2022

Another JR: Sounds like you have the same truck I'm looking at except I need a regular cab, long bed. The spec on the GMC website is 80.67" for your truck. So you think the height spec includes the sharkfin? The reg cab, 8'bed, cab height is 80.94".

If that includes the sharkfin, I'd have a whole 3/4" clearance! Lordy! I guess one could order a truck without the satellite antenna to get a bit more clearance. Sure would miss the Sirrius. Also thinking I might pick up a bit of clearance with the driveway apron matching up to the garage floor at a slight angle, but can't tell without a test fit.

Thanks for the reply.

Another JR · February 10, 2022

Yes I believe the shark fin is included in the overall height spec. Also, my truck is slightly below the height spec, but that may be because I measured with a full gas tank. The shark fin is mounted on the front driver’s corner of the roof, which is not the highest part of the roof on my crew cab (no sun roof). The high point is in the center about even with the back edge of the front doors. The shark fin tip is about the same height as the high point in the middle if the roof, not more than 1/4” taller from my measurements. All of my measurements above have a little margin in them to cover any measurement error.

From what you describe you should be ok and will have an inch plus of clearance. You get used to it. My camper’s tallest vent clears my barn door opening by about an inch. You just drive dead slow every time to avoid any bounce.

Michael621 · February 11, 2022

22 hours ago, Gary Wiles said:

......I'd have a whole 3/4" clearance! Lordy! I guess one could order a truck without the satellite antenna to get a bit more clearance. Sure would miss the Sirrius. Also thinking I might pick up a bit of clearance with the driveway apron matching up to the garage floor at a slight angle, but can't tell without a test fit.

Thanks for the reply.

On my 2500, the shark fin antenna pushes through the rubber weather gasket on the exterior of the garage door, just barely missing the wood. Talk about close, but it fits!