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GMC Suburban

Maintenance specs for 6 variants of the GMC Suburban — from 1985 to 1999.

19851991 GMC Suburban

5.7L V8 (L05) · RWD

210 hp / 300 lb-ft

Engine Oil

Weight5W-30
Capacity5 qt
FilterPF35

Transmission

Type4-Speed Automatic (700R4)
FluidDexron III
Drain & fill5 qt
Full capacity10 qt

Coolant

TypeGreen (Ethylene Glycol)
Capacity18 qt
Shop coolant

Brake Fluid

TypeDOT 3
Shop DOT 3

Power Steering

TypeHydraulic
FluidGM Power Steering Fluid

Differentials

Rear fluid80W-90 GL-5

Fuel

Tank42 gal
TypeRegular 87

Tires

Size245/75R16
Pressure (front)35 PSI
Pressure (rear)35 PSI
Shop 245/75R16 tires

Battery

Group size78
CCA770 A
Shop group 78 battery

Spark Plugs

Gap0.035 in
Shop spark plugs

Wiper Blades

Driver18"
Passenger18"
Shop wiper blades

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

19851991 GMC Suburban

5.7L V8 (L05) · 4WD

210 hp / 300 lb-ft

Engine Oil

Weight5W-30
Capacity5 qt
FilterPF35

Transmission

Type4-Speed Automatic (700R4)
FluidDexron III
Drain & fill5 qt
Full capacity10 qt

Coolant

TypeGreen (Ethylene Glycol)
Capacity18 qt
Shop coolant

Brake Fluid

TypeDOT 3
Shop DOT 3

Power Steering

TypeHydraulic
FluidGM Power Steering Fluid

Differentials

Front fluid80W-90 GL-5
Rear fluid80W-90 GL-5

Transfer Case

FluidDexron III ATF

Fuel

Tank42 gal
TypeRegular 87

Tires

Size245/75R16
Pressure (front)35 PSI
Pressure (rear)35 PSI
Shop 245/75R16 tires

Battery

Group size78
CCA770 A
Shop group 78 battery

Spark Plugs

Gap0.035 in
Shop spark plugs

Wiper Blades

Driver18"
Passenger18"
Shop wiper blades

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

19851999 GMC Suburban

6.5L Turbo Diesel V8 (L56/L65) · RWD

180 hp / 360 lb-ft

Engine Oil

Weight15W-40
Capacity7 qt
FilterPF35

Transmission

Type4-Speed Automatic (4L80-E)
FluidDexron III
Drain & fill5 qt
Full capacity13 qt

Coolant

TypeGreen (Ethylene Glycol)
Capacity25 qt
Shop coolant

Brake Fluid

TypeDOT 3
Shop DOT 3

Power Steering

TypeHydraulic
FluidGM Power Steering Fluid

Differentials

Rear fluid80W-90 GL-5

Fuel

Tank42 gal
TypeDiesel

Tires

Size245/75R16
Pressure (front)35 PSI
Pressure (rear)35 PSI
Shop 245/75R16 tires

Battery

Group size78
CCA850 A
Shop group 78 battery

Wiper Blades

Driver18"
Passenger18"
Shop wiper blades

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

19921999 GMC Suburban

5.7L V8 Vortec (L31) · RWD

255 hp / 330 lb-ft

Engine Oil

Weight5W-30
Capacity5 qt
FilterPF35

Transmission

Type4-Speed Automatic (4L60-E)
FluidDexron III
Drain & fill5 qt
Full capacity11.2 qt

Coolant

TypeDex-Cool (orange)
Capacity18 qt
Shop coolant

Brake Fluid

TypeDOT 3
Shop DOT 3

Power Steering

TypeHydraulic
FluidGM Power Steering Fluid

Differentials

Rear fluid80W-90 GL-5

Fuel

Tank42 gal
TypeRegular 87

Tires

Size245/75R16
Pressure (front)35 PSI
Pressure (rear)35 PSI
Shop 245/75R16 tires

Battery

Group size78
CCA770 A
Shop group 78 battery

Spark Plugs

Gap0.035 in
Shop spark plugs

Wiper Blades

Driver18"
Passenger18"
Shop wiper blades

Service Intervals

Oil change5,000 mi
Trans service50,000 mi
Coolant flush150,000 mi
Spark plugs100,000 mi
Timingchain (no scheduled replacement)
Air filter45,000 mi
Drive belt100,000 mi

19921999 GMC Suburban

5.7L V8 Vortec (L31) · 4WD

255 hp / 330 lb-ft

Engine Oil

Weight5W-30
Capacity5 qt
FilterPF35

Transmission

Type4-Speed Automatic (4L60-E)
FluidDexron III
Drain & fill5 qt
Full capacity11.2 qt

Coolant

TypeDex-Cool (orange)
Capacity18 qt
Shop coolant

Brake Fluid

TypeDOT 3
Shop DOT 3

Power Steering

TypeHydraulic
FluidGM Power Steering Fluid

Differentials

Front fluid80W-90 GL-5
Rear fluid80W-90 GL-5

Transfer Case

FluidAuto-Trak II

Fuel

Tank42 gal
TypeRegular 87

Tires

Size245/75R16
Pressure (front)35 PSI
Pressure (rear)35 PSI
Shop 245/75R16 tires

Battery

Group size78
CCA770 A
Shop group 78 battery

Spark Plugs

Gap0.035 in
Shop spark plugs

Wiper Blades

Driver18"
Passenger18"
Shop wiper blades

Service Intervals

Oil change5,000 mi
Trans service50,000 mi
Coolant flush150,000 mi
Spark plugs100,000 mi
Timingchain (no scheduled replacement)
Air filter45,000 mi
Drive belt100,000 mi

19921999 GMC Suburban

7.4L V8 (L29) · RWD

290 hp / 410 lb-ft

Engine Oil

Weight5W-30
Capacity6 qt
FilterPF35

Transmission

Type4-Speed Automatic (4L80-E)
FluidDexron III
Drain & fill5 qt
Full capacity13 qt

Coolant

TypeDex-Cool (orange)
Capacity22 qt
Shop coolant

Brake Fluid

TypeDOT 3
Shop DOT 3

Power Steering

TypeHydraulic
FluidGM Power Steering Fluid

Differentials

Rear fluid80W-90 GL-5

Fuel

Tank42 gal
TypeRegular 87

Tires

Size245/75R16
Pressure (front)35 PSI
Pressure (rear)35 PSI
Shop 245/75R16 tires

Battery

Group size78
CCA770 A
Shop group 78 battery

Spark Plugs

Gap0.035 in
Shop spark plugs

Wiper Blades

Driver18"
Passenger18"
Shop wiper blades

Service Intervals

Oil change5,000 mi
Trans service50,000 mi
Coolant flush150,000 mi
Spark plugs100,000 mi
Timingchain (no scheduled replacement)
Air filter45,000 mi
Drive belt100,000 mi