Beginning in 1994, GM began making numerous annual changes to the Blazer/Yukon, including:
Revised front clip - Blazer (1994)
Revised interior including a driver-side air bag, revised side mirrors, Blazer renamed Tahoe, 4-door option included (1995)
Revised Vortec "5700" (350 cu in) and "7400" (454 cu in) engines with increased power and fuel efficiency, electronic 4WD shifting, daytime running lights, illuminated entry, and some new interior features (1996)
Revised automatic transmission, improved steering system and added passenger-side air bag, Yukon 2-door option dropped (1997)
Programmable Homelink transmitter, PassLock security system, heated front seating surfaces optional, air conditioning for rear seat passengers, AutoTrac automatic 4WD option added, second generation air bags, transmissions revised again (1998)
Revised steering wheel and improved radiators and transmissions, Tahoe 2-door option dropped (1999)