DeVille V6-260 4.3L DSL (1985)
Throttle Valve Cable/Linkage: All Technical Service Bulletins
IV. Harsh 3-2 Shift At High Altitude* Only
1985-1990 DeVilles and Fleetwoods and 1986-1990 Eldorados and Sevilles
*
- Refer to Figure 8 for designated high altitude counties.