VI. Harsh Upshifts - High Altitude Only
- 1985-86 6000 models with 2.8L engines
Service Procedure:
Harsh upshifts for ALL GEARS at high altitudes may be caused by high line pressure due to low engine vacuum. This condition may be corrected on certain transaxle models by installing the appropriate aneroid modulator Service Package.
Based on vehicle applications, each package contains:
Pontiac 6000 Models with 2.8L Engine Only
(1) Vacuum Modulator Assembly
(1) Modulator Valve
(1) O-Ring Seal
(1) Instruction Sheet