This comprehensive Service Repair Manual covers every aspect of your Nissan Truck or Pathfinder, specifically models in the D21 Series, for years 1988, 1989, and 1990. Whether you're a seasoned mechanic or a DIY enthusiast, this manual provides the detailed information you need for any repair, maintenance, rebuild, refurbishment, or restoration project. Inside, you'll find step-by-step instructions, detailed illustrations, wiring diagrams, and specifications for every component of your vehicle. From routine maintenance to complex repairs, this manual will guide you through the entire process. It is meticulously organized, featuring sections dedicated to: * General Information * Maintenance * Engine Mechanical * Engine Lubrication & Cooling Systems * Engine Fuel & Emission Control System * Clutch * Manual Transmission * Automatic Transmission * Transfer * Propeller Shaft & Differential Carrier * Front Axle & Front Suspension * Rear Axle & Rear Suspension * Brake System * Steering System * Body * Heater & Air Conditioner * Electrical System This manual is a valuable resource for anyone seeking to keep their Nissan Truck or Pathfinder running smoothly and saving money on professional repairs.

The Nissan D21, marketed as the Nissan Hardbody in the United States and Canada, was a compact pickup truck produced by Nissan from 1986 to 1997. The D21 replaced the earlier 720 model and was available in a variety of cab configurations, bed lengths, and engine options. The D21 was renowned for its rugged construction, reliable performance, and affordability, making it a popular choice for both work and leisure activities. It offered a wide range of trim levels and options, catering to diverse needs. The pickup truck was offered in base, XE, and SE trim levels, with the SE being the most luxurious. It could be equipped with a number of features, including air conditioning, power steering, and cruise control. The D21's robust construction and wide range of options made it a popular choice for a variety of applications. The truck could be equipped with a gasoline engine or a diesel engine, giving users the choice of power and fuel efficiency. The D21 was also offered with a variety of transmissions, including a 5-speed manual, a 4-speed automatic, and a 5-speed manual with overdrive. The D21 was offered in both 2WD and 4WD configurations. The 4WD models were equipped with a part-time four-wheel drive system that allowed the driver to engage four-wheel drive when needed. The D21 also offered a number of optional features, including a towing package, a camper shell, and a variety of accessories. The D21 was the foundation for the Nissan Pathfinder, the first generation of the iconic SUV, introduced in 1986. It shared the D21's rugged chassis, engine options, and reliable nature, creating a popular platform for both on- and off-road adventures.