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GMC

GMC is part of GM, which first specializes in trucks. Now the company expands up to global sales and sells trucks, military vehicles, buses, pickups, sports cars.

1996 was a year of merging the GMC Truck Division and Pontiac Motor Division.

GMC and Chevrolet are very similar mechanically. However, GMC poses itself as a luxury brand with its Denali lineup.

While many GMC and Chevrolet trucks are mechanically identical, GMC is positioned as a premium offering to the mainstream Chevrolet brand, with luxury vehicles such as the Denali series.
To its centenary in 2002, the company released a book The First 100 Years, which illustrated company brief history.

As of 2007, the company released its unit body Acadia, the SUV. In December 2008 GMC stopped to produce its previous model GMT-360 due to a shutdown of a car-making factory in Moraine, Ohio. In 2009, the company ceased to produce mid-size trucks and offered its middle SUV with GM Theta platform from Chevrolet Equinox. It completely replaced the Pontiac Torrent.

Nowadays the company produces crossovers, truck beds, wagons, medical cars, motor coaches, military machines, camper vans, medium trucks.

ABOUT GMC WHEEL SPACERS

Wheel spacers have various designs with their original ones. You can see it in the picture below and it fits different types of pcd.
Standard wheel spacers suits for most vehicles and are inexpensive. However, they often don’t fit perfectly into the size of the hub. This entails unnecessary vibrations while driving.

In addition, the load unevenly divides up and goes down the wheel studs.

We suggest you consider the hub centric wheel spacers with an individual approach to each vehicle. Spacers ensure exact matching of the holes for the nuts and bolts, and the hub fits snugly to the center that underlies the hub centric name. This reduces the risk of vibrations. Wheel spacers distribute the load equally on all parts of the wheel.

 

GMC BOLT PATTERN CHART

Most drivers use standard conical nuts at 60 degrees, differing in angle in the form of a cone. Full-size trucks with centered wheels get nuts with a plane flange. Compact cars, for example, buggy and UTV, provide ball-end lugs.

1/2″-20 60° Acorn M10-1.25 60° Acorn
9/16″-18 60° Acorn M12-1.25 60° Acorn
9/16″-18 90° Acorn M12-1.5 60° Acorn
9/16″-18 Flange M12-1.5 Ball
5/8″-11 90° Acorn M14-1.5 60° Acorn
5/8″-11 Flange M14-1.5 Ball
5/8″-18 90° Acorn M14-2.0 60° Acorn
5/8″-18 Flange M14-2.0 Ball

 

bol pattern chart

If the bolt pattern has an even number of bolts, measure the distance between the centers of the opposite bolts. With an odd number of lugs, for example, 5, you need to measure from the top of the high lug to the middle of the bottom lug.

After measuring the bolt pattern, find the value in our table. When you measure the 5-inch distance and the number of your lug is 5 you get the 5×5” bolt pattern.

GMC LUG NUT TORQUE SPECIFICATIONS

You shouldn’t start using dirty threads. In this case, the torque value may vary. Don’t unnecessarily extend the lugs because they can break or fail.

When you clean your threads, screw wheel spacers manually. Only then secure them with a dyno key. Re-read carefully the instructions of your manufacturer.

After at least 100 miles don’t be too lazy to re-look at the wheel to check the torque.

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