The Oldsmobile Bravada, a mid-size luxury sport utility vehicle, was manufactured from 1991 to 2004. Despite being equipped with four-wheel drive, multiple Bravada models suffered from transfer case problems, which negatively affected 4WD performance and reliability.
Oldsmobile technical service bulletins (TSBs) report that second and third generation Bravada models (1996-2004) suffer from multiple transfer case problems. In particular TSBs indicate that a "cracked or broken" transfer case is common. A crack in the transfer case impedes its ability to power the front and rear axles during four-wheel drive operation.
Symptoms of a faulty transfer case include "shuddering" and "vibration" while driving in four-wheel drive. In some cases the four-wheel drive feature may become completely inoperative. Four-wheel drive problems are indicated by flashing 4WD indicator lights.
TSBs report that calibration options are available for minor transfer case problems. If your transfer case is cracked and requires replacement, it will cost approximately $1,375 for parts and labor. A non-cracked transfer case can be maintained by replacing its gear fluids every 60,000 miles.
