Quick Summary
Looking for the correct oil type for your 1988 GMC R2500? According to factory specs, the 4.8L 6 -cyl Engine Code [T] T requires Check Link (Manual match required) viscosity oil. Using the right oil capacity of Check Link ensures engine longevity and fuel efficiency.
๐ข๏ธ 4.8L 6 -cyl Engine Code [T] T Most Common
Verified Data
Capacity
Check Link
Viscosity
Check Link (Manual match required)
Drain Plug Torque
Check Link
๐ข๏ธ 5.7L 8 -cyl Engine Code [K] K
Verified Data
Capacity
Check Link
Viscosity
Check Link (Manual match required)
Drain Plug Torque
Check Link
๐ข๏ธ 6.2L 8 -cyl Engine Code [J] J Diesel
Diesel
Verified Data
Capacity
Check Link
Viscosity
Check Link (Manual match required)
Drain Plug Torque
Check Link
๐ข๏ธ 7.4L 8 -cyl Engine Code [N] N
Verified Data
Capacity
Check Link
Viscosity
Check Link (Manual match required)
Drain Plug Torque
Check Link
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Recommended Maintenance Products
Everything you need for a complete oil change
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Motor Oil
Get the correct viscosity for your engine
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Oil Filter
OEM or premium aftermarket options
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Drain Plug Gasket
Replace every oil change - don't reuse!
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Oil Drain Pan
Catch and store used oil safely
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Funnel Set
No-spill oil pouring
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Mechanic Gloves
Keep your hands clean
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Common Trouble Codes for 1988 GMC R2500
Get vehicle-specific repair guides for these codes