The Detroit Diesel 6.5L Turbo Diesel (RPO: L65 and L56) was GM’s primary light-duty diesel engine throughout the GMT400 era. Introduced in 1992 as an evolution of the earlier 6.2L diesel, the 6.5L added displacement and turbocharging to improve power, drivability, and towing performance. While it was never intended to…
Category: 1998
1996
Read more
Vortec 5.7 L31 : The Last of the Classic Small-Block Chevy
The Vortec 5700 L31 stands as a milestone in Chevrolet truck engine history: the final incarnation of the original small-block Chevy V8 family that began in 1955. While the ubiquitous 350 V8 had powered Chevy trucks, vans, and SUVs for decades, the L31 represents the pinnacle of that long-lived design before GM…
1996
Read more
L29 454 : Modernized Big Block
Also known as the Vortec 7400, the L29 was the final and most modern iteration of the venerable big block Chevy. It was available from 1996 to 2000 in 2500/3500/3500HD trucks and 2500 Suburbans. Factory power rating was 290 HP at 4000rpm and torque was 410 ft-lbs at 3200rpm.
1988
Read more
CUCV II : GMT400 joins the Military
A rarely seen model is the 1987-2001 CUCV II, the militarized version of the civilian GMT400 platform. Only purchased in small numbers by the US military (Only number I have found in my research is around 800 units), with over 3,000 ordered by other governments across the world.
The CUCV II was a modernization of the more well know “squarebody” CUCV. Based almost directly on the civilian version, only specific changes were made for military use. CUCV II’s were not inherently more heavy duty than what was available to everyone else from their local GM dealership.
1998
Read more
1998 Chevrolet Pickup Dealer Info Sheet
Documents supplied to dealers for vehicle ordering.
Options, specifications, RPO codes.
Scan quality varies.
Excellent source of what was available from GM for 1998 model year.