Before the turn of the century, one of the best trucks to own was the full-size GMC K1500. Its huge bed powered by a strong engine was among the qualities one would get from it. With a good four-wheel-drive system, the vehicle was an instant choice for anybody looking for the most in utility and practicality. However, there are a few mechanical faults with the GMC K1500 that may its owner headaches. Here are a few of these:
Some replacement oil filters from the Fram brand for the 1994-1999 GMC K1500 are reported to be defective and unsuitable for installation. The affected items manufactured from May 2006 up to September 2007 use a weak gasket that is prone to damage when exposed to high levels of heat and pressure. Since oil regularly passes through the filter, continuous use could result to a loss of engine oil and fire. To avoid this catastrophic consequence, Fram has ordered a recall on these products and will gladly replace any defective products for free.
Some models of the GMC K1500 from 1988 to 1993 have been recalled because of a transmission issue. Leaking transmission fluid from the vent tube has been observed because of unexpected heat coming from the gearbox. At its worst, the liquid may catch fire if ever it comes into contact with something that can ignite it. A longer tube placed on the left side of the engine compartment can prevent this problem.
Another problem is the hard shift from 1st to 2nd gear. It may persist no matter how much the truck is restarted. It may be due to a slipping transmission, busted torque sensors, burnt clutches, old solenoids, or a bad gearbox as a whole.
There is a technical service bulletin that involves some of the GMC K1500s manufactured between 1988 up to 1993. It states that one or both of the front doors of these trucks behave unusually. The door may appear dropped or sagged when open. It may also move awkwardly and make weird noises when opened and closed under extreme conditions. The cause of the problem may be a door-hinge pin and bushing that is prematurely worn.