[2] For the 2019 model year, after a ten-year hiatus, General Motors re-entered the conventional medium-duty truck segment.

[5] The largest versions of the medium-duty C/K series, the Kodiak/TopKick were developed to accommodate the Caterpillar 3208 V8 diesel (sourced from the larger Chevrolet Bruin/GMC Brigadier).

To fit the new engine (which used a larger radiator), a taller hood (repositioning the headlamps below the grille) was designed, requiring the cab to be mounted several inches higher.

For Latin America, GMT530 trucks were assembled locally in Brazil (sourcing components from Mexico); all Brazil-produced units were fitted with Caterpillar 3116 engines.

The 2002 GMC C8500 tandem-axle dump truck, built on June 26, 2002, was owned and operated by the city of Janesville for nearly 20 years prior to the sale.

[7] In line with the previous generation, the GMT530 trucks derived their cabs from the GMT400 platform (introduced in 1988) to lower the costs of tooling.

[9] A Class 8 truck, the C8500 was offered with either single and tandem rear axles, taking over the role left vacant by the departure of the GMC Brigadier and General after 1988.

The large-block 6.0L (standard) and 7.0L (optional) V8s returned from the previous medium-duty trucks; both engines were upgraded with fuel injection.

[11] Outliving its conventional-cab counterpart by seven years, the GMT530 medium-duty COEs were among the final vehicles produced by Janesville Assembly (as part of the General Motors-Isuzu commercial truck partnership).

Differing from the Kodiak and TopKick only by its manufacturer grille badging, the H6500/H7500 was powered by the 7.8L Duramax inline-six, shared by the Kodiak/TopKick and Chevrolet/GMC T-series trucks (a medium-duty COE combining the cab of the Isuzu Forward and the GMT530 chassis).

As the decade progressed, General Motors sought to divest its interests in commercial truck production, beginning discussions with longtime partner Isuzu and major competitor Navistar.

[14][15] Though a tentative agreement to sell its commercial truck line to Navistar was reached at the end of 2007[16], the sale collapsed in mid-2008.

Developed in a joint venture with Navistar (today, International Motors)[3], the Chevrolet Silverado 4500HD, 5500HD, and 6500HD is a vocationally-oriented medium-duty truck.

[21] In line with the first two generations of the Kodiak, the medium-duty Silverado/International CV adopts its cab from pickup trucks (featuring the K2XX-generation Silverado), mounted on a dedicated chassis with heavier-duty frame rails and a forward-tilting hood.

As of current production, the model line is offered with a 350hp 6.6L Duramax turbodiesel V8; the engine is paired with a choice of Allison automatic transmissions, depending upon the truck's intended usage.

In a break from GM tradition, the medium-duty Chevrolet Silverado HD is sold with no GMC divisional counterpart.

In contrast to its past of vehicles developed for vocational use, GMC competes as a premium brand, showcasing its luxury-oriented Denali trim.

Following in the tradition of its medium-duty C/K predecessor, the GMT530 platform was utilized by General Motors to supply the school bus industry throughout its production run.

In an unusual move at the time, starting in 1992, GM offered the Kodiak/TopKick solely to a single body manufacturer, Blue Bird Corporation from 1992 to 2002.

This special version featured an 8.5-foot (2.6 m) steel dually pickup box and tailgate with custom composite side panels and protective Rhino interior lining.

[24] Though functional changes will remain classified information, the body visibly differs from the 2009 vehicle, adopting contemporary Cadillac design elements.