GMC manufactured the V3500 one-ton 4x4 pickup truck during 1987 to 1991 as part of the R/V series through the square-body platform without adopting the GMT400 architecture. The V3500 provided buyers with three possible engine choices including the 5.7L V8 gasoline motor and the powerful 7.4L V8 gasoline engine along with the 6.2L naturally aspirated diesel V8 engine. One key feature of the GMC V3500 driving system included a high-positioned sophisticated transmission that positioned the gearbox for obstacle avoidance and ground clearance maintenance. The V3500 featured heavy-duty multi-leaf spring suspension in the rear and a solid front axle with leaf springs, designed to handle significant payloads while maintaining ride stability. The GMC V3500 came standard with automatic brake self-adjusters paired to front disc brakes and rear drum brakes that could be upgraded to four-wheel hydraulic brakes depending on customer preferences for safe braking. The GMC V3500 offered practical aspects that included a six-segment grille combined with enlarged rear and side lamps which improved appearance and operational capability. The maintenance of GMC V3500 vehicles requires genuine parts because these components achieve factory-built specifications which produce maximum vehicle performance. GMC V3500 owners can achieve extended reliable service from their iconic vehicle through the wide range of OEM components released for this historical pickup model.
The GMC V3500 trucks exhibit problems that fall in the categories of braking hydraulics, body harder, and electrical lock up. On the braking system, the V3500 can leak the power steering fluid through the hydro-boost brake booster. Expect assist loss, hard pedal, and pump noises during braking. Leakage occurs at the internal seal or hose fitting in or near the master cylinder. Repair replaces a brake booster, flushes the steering circuit, and bleeds air. Body hardware, interior and exterior door handles on the V3500 have cracking or separation at the pivot. Doors may also fail to open, or they may be heavy to unlatch. New door pulls and alignment of the latches make entry smooth again. In the electrical locking mechanism, the power door lock actuator on the V3500 is slow to respond, cone-like, or to cease functioning. Confirmation of power and ground, switch checks, and drag of links are all inspected. Instant unlock and lock are achieved again with a new actuator. Check fluid levels with any assist concern on GMC vehicles as well. Avoid low fluid that would cause damage to the GMC pump. Frequent hinge lubrication lessens the handling force on all V3500. Test drive the GMC V3500 and test pedal feel, and test the door operation after repairs.
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