GMC Rally
Maintenance specs for 3 variants of the GMC Rally — from 1985 to 1993.
1985–1995 GMC Rally
5.0L V8 (L03) · RWD
175 hp / 270 lb-ft
Transmission
Type4-Speed Automatic (4L80-E)
FluidDexron III
Drain & fill5 qt
Full capacity13 qt
Power Steering
TypeHydraulic
FluidGM Power Steering Fluid
Differentials
Rear fluid80W-90 GL-5
Fuel
Tank33 gal
TypeRegular 87
Service Intervals
Oil change5,000 mi
Trans service50,000 mi
Coolant flush30,000 mi
Spark plugs30,000 mi
Timingchain (no scheduled replacement)
Air filter45,000 mi
Drive belt100,000 mi
1985–1995 GMC Rally
5.7L V8 (L05) · RWD
210 hp / 300 lb-ft
Transmission
Type4-Speed Automatic (4L80-E)
FluidDexron III
Drain & fill5 qt
Full capacity13 qt
Power Steering
TypeHydraulic
FluidGM Power Steering Fluid
Differentials
Rear fluid80W-90 GL-5
Fuel
Tank33 gal
TypeRegular 87
Service Intervals
Oil change5,000 mi
Trans service50,000 mi
Coolant flush30,000 mi
Spark plugs30,000 mi
Timingchain (no scheduled replacement)
Air filter45,000 mi
Drive belt100,000 mi
1985–1993 GMC Rally
6.2L Diesel V8 (L56) · RWD
130 hp / 240 lb-ft
Transmission
Type4-Speed Automatic (4L80-E)
FluidDexron III
Drain & fill5 qt
Full capacity13 qt
Power Steering
TypeHydraulic
FluidGM Power Steering Fluid
Differentials
Rear fluid80W-90 GL-5
Fuel
Tank33 gal
TypeDiesel
Service Intervals
Oil change5,000 mi
Trans service50,000 mi
Coolant flush30,000 mi
Timingchain (no scheduled replacement)
Air filter45,000 mi
Drive belt100,000 mi