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Engines built prior to April 1, 2006, contained AFM hardware; however, the mode was not enabled in the PCM, and thus the system was not functional. Engines built after this date also lacked any AFM hardware, and instead used a valley cover plate similar to the L20, until the debut of the L94 variants mentioned below.
An ECU from a Geo Storm. An electronic control unit (ECU), also known as an electronic control module (ECM), is an embedded system in automotive electronics that controls one or more of the electrical systems or subsystems in a car or other motor vehicle.
For instance, four different North American divisions (Chevrolet, Pontiac, Oldsmobile and Buick) offered four completely different versions of a 350 cu in V8 engine - very few parts would interchange between the four designs despite their visual similarities, resulting in confusion for owners who naturally assumed that replacement parts would ...
2005–present 6L80 · 6L90 — 6-speed heavy-duty (used in GM trucks and performance cars) 2014–present 8L 90 — 8-speed heavy-duty (used in GM trucks and performance cars) 2016–present 8L 45 — 8-speed light-duty (used in GM luxury cars) 2017–present 10L80 — Ford-GM 10-speed automatic (used in GM light trucks pickups and related SUVs)
Based on the same GMT T1XX platform as the Silverado 1500, the Tahoe distinguishes itself by swapping that truck's live axle and leaf springs for an independent rear multilink suspension setup with coil springs, thus lowering the floor of the vehicle and creating more room in both the cargo area and the second-and third-row seats. The Tahoe ...
1991–2007 Chevrolet/GMC Suburban/GMC Yukon XL 1500 and 2500; 1991–2009 Chevrolet Van/Chevrolet Express/GMC Savana 2500 and 3500; 1995–1999 Chevrolet Tahoe/GMC Yukon 6.5L Diesel; 2002–2006 Chevrolet Avalanche 2500; 1992–2006 Hummer H1; 1992–1998 Rolls-Royce Silver Spirit/Spur II, III, IV; 1991–1992 Bentley Eight; 1991–1997 ...
While controlled or partially controlled by the Powertrain Control Module (PCM), third gear is used as a failsafe gear and default operating gear during unexpected conditions. Without computer control, the transmission will automatically hydraulically shift from first gear into second gear based on input shaft RPM.
In order for it to keep being competitive, the Blazer and Jimmy received a new 4.3 L (262 cu in) V6 option for 1988 (also used with the S-10/S-15 pickups, Astro/Safari vans, G-series vans, and C/K 1500 and 2500 trucks), based on the Chevrolet small-block V8 engine, producing a respectable 150 hp (112 kW). Power output was increased to 160 hp ...