What is the GMC Suburban?
The GMC Suburban was a full-size, truck-based SUV with a long body for carrying passengers and cargo. It served the spacious end of GMC’s utility-vehicle range, with a practical shape suited to everyday travel and heavier-duty use.
GMC used the Suburban name through 1999, after which its full-size SUV was called the Yukon XL. The Rounded-Line generation ran from 1984 to 1991. The VIII generation followed from 1992 to 1999, using the GMT425 code and the newer GMT400 platform family.
GMC Suburban generations
The Rounded-Line generation ran from 1984 to 1991, with the squared-off truck styling of its era. The VIII generation, identified by the GMT425 code, followed from 1992 to 1999. It brought a more contemporary design on the GMT400 platform family while keeping the Suburban’s full-size, long-body form.
Engines and power
United States versions had engine sizes from 5.0 L to 6.2 L and used petrol or diesel. Canadian versions had 5.7 L petrol engines.
How economical is the GMC Suburban?
The lowest listed United States consumption is 13.1 L/100 km, and the best combined EPA rating is 18 MPG. Canada’s lowest listed figure is 16.8 L/100 km on the NRCan 5-cycle test. Fuel-economy procedures differ by market: the United States uses EPA, Canada uses the 5-cycle test, and Europe uses WLTP or NEDC.
Questions and answers
When was the GMC Suburban sold?
United States figures cover 1984–1999; Canadian figures cover 1995–1999.
What generations does the GMC Suburban have here?
The Rounded-Line generation ran from 1984 to 1991, followed by the VIII generation from 1992 to 1999.
What engines were available?
United States versions had engines from 5.0 L to 6.2 L and used petrol or diesel. Canadian versions had 5.7 L petrol engines.
What is its best combined EPA rating?
The best combined EPA rating is 18 MPG.
