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2.8L Duramax Maintenance Schedule & Service Guide

Colorado/Canyon 2.8L Diesel Maintenance Intervals & Service Info

Applicable Models:

2016 - present Chevrolet Colorado, GMC Canyon midsize pickups

Applicable Engine(s):

2.8L Duramax I-4 turbodiesel (RPO LWN)

Applicable Transmission(s):

General Motors 8L90 eight speed automatic

2.8L Duramax Maintenance Schedule

Service procedures that are required at a declared vehicle mileage OR time interval should be performed at the point which either the mileage OR time interval is reached (whichever should come first). A vehicle may fall under the "severe" or "special" service category if any of the following is true:

• Vehicle is idled excessively (> 10 minutes of idling in a 60 minute period), frequently driven in heavy stop-and-go traffic, or is used regularly for short trips that prevent the engine from reaching normal operating temperature.
• Vehicle is operated in extremely hot or cold weather conditions.
• Vehicle is used to tow a trailer or haul heavy cargo.
• Vehicle is operated off-road or in dusty conditions.

Note - unless otherwise noted, service intervals apply to both Colorado/Canyon pickups and Express/Savana van models.

Service Procedure

Recommended Interval


Replace engine air filter

45,000 miles or 4 years


Change engine oil & oil filter

As indicated by "CHANGE ENGINE OIL SOON" message


Replace fuel filter(s)


37,500 miles or 2 years



30,000 miles or 2 years

Replace serpentine belt

150,000 miles


Service engine cooling system

150,000 miles or 5 years


Replace engine timing belt

150,000 miles


Replace automatic transmission filter & fluid

Normal conditions

No service interval provided


Severe conditions

45,000 miles

Replace transfer case fluid

Normal conditions

97,5000 miles


Severe conditions

45,000 miles

Replace front differential fluid

Replace immediately if differential/axle is submerged in water; water intrusion probable

[6], [7]

Replace rear differential fluid

Add diesel exhaust fluid (DEF)

As necessary or indicated that fluid level is low


[1] Inspect at oil change intervals and replace as necessary.
[2] Do not exceed 7,500 miles/12 months between oil changes.
[3] Replace fuel filter(s) at required intervals OR as indicated when prompted by "CHANGE FUEL FILTER" message in the instrument panel display. More frequent fuel filter replacements are recommended when using biodiesel/biodiesel blends. Pickups have two fuel filter elements, vans have a single fuel filter.
[4] Recommend more frequent cooling system service after initial 150,000 mile/5 year service.
[5] Transmission service interval absent when vehicle falls under "normal" service category; recommend adhering to the "severe" service category and servicing transmission every 45,000 miles.
[6] Replace fluid immediately if submerged in water; water intrusion probable.
[7] No service interval provided by GM; recommend servicing at 100,00 mile intervals. Synthetic gear oil advised.

2.8L Duramax Service Part Numbers

Note - unless otherwise noted, part numbers are valid for Colorado/Canyon pickups and Express/Savana van models. Part numbers have been verified through the 2019 model year.

Part Description

GM/ACDelco Part Number(s)

Engine air filter


ACDelco A3216C


ACDelco A3221C

Engine oil filter


ACDelco PF2262G (PF69)


ACDelco PF2267G

Oil filter cap


ACDelco 55595790


ACDelco 55484645

Oil pan drain plug

GM 11562588 (includes gasket)

Oil fill cap

ACDelco FC271

Fuel filter


ACDelco TP1007 (sold in pairs w/ o-ring seals)


ACDelco TP2016

Serpentine belt


ACDelco 6K854A


ACDelco 12662028

Glow plug

ACDelco 16G


ACDelco 12642691 (sold as assembly w/ thermostat housing)

Thermostat housing gaskets

Thermostat to housing/outlet fitting

ACDelco 12650487

Thermostat housing to engine

ACDelco 12650486

Coolant overflow tank


ACDelco 84388367


ACDelco 84225911

Coolant overflow tank cap

ACDelco 13502353

Upper radiator hose


ACDelco 23385947


ACDelco 84185766

Lower radiator hose




ACDelco 84440071

Front differential gasket


ACDelco 23471893



Rear differential gasket


ACDelco 23490354


ACDelco 26063649

Automatic transmission filter


ACDelco 24236933


ACDelco TF922

Transmission pan gasket


ACDelco 24225800


ACDelco 24260071

2.8L Duramax Colorado/Canyon & Express/Savana Fluid Specifications & Capacities


Oil/Fluid Specification

Capacity [1]

Engine oil [2]

Ambient temp > -20° F

SAE 5W-30 meeting GM dexos2 specifications
Recommend Amsoil 5W-30 synthetic diesel oil, meets dexos2 spec

6.0 quarts w/ filter change

Ambient temp < -20° F

SAE 0W-40 meeting GM dexos2 specifications

Engine coolant [3]

GM DEX-COOL extended life engine coolant (orange)
ACDelco 10-101 concentrated engine coolant (GM 12346290)
ACDelco 10-5027 premixed engine coolant (GM 12378390)

11.1 quarts

14.4 - 16.9 quarts

Automatic transmission fluid

Colorado/Canyon w/ 6 spd

GM DEXRON VI ATF (ACDelco 10-9243)

~ 6.7 quarts service refill capacity

Express/Savana w/ 8 spd


Transfer case fluid

GM DEXRON VI ATF (ACDelco 10-9243)
Recommend Amsoil FE Synthetic ATF

2.0 quarts

Front differential gear oil

SAE 75W-90 gear oil
Recommend Amsoil Severe Gear 75W-90 synthetic gear oil

1.35 quarts

Rear differential gear oil

1.6 quarts

Diesel exhaust fluid (DEF)

ACDelco diesel exhaust fluid 10-4023 [4]

5.4 gallons

5.5 gallons

[1] Capacities are nominal; always fill to appropriate dipstick marker, fill plug level, or other applicable fluid level indicator. Oil and fluid levels should be verified before and after driving vehicle.

[2] SAE 5W-30 motor oil preferred within temperature range. SAE 0W-40 required if ambient temperature is expected to drop below -20° F. Recommend Amsoil 5W-30 synthetic diesel oil, specifically designed for diesel engine applications and meets GM dexosD, dexos2 specifications.

[3] Concentrated engine coolant must be diluted 50/50 with distilled water. Do NOT dilute premixed engine coolant. Cooling system capacity on Express/Savana vans depends on heater configuration and optional equipment.

[4] Or other acceptable diesel exhaust fluid; do NOT attempt to dilute DEF with a foreign substance under any circumstances.

2.8L Duramax Belt Routing Diagram

2.8L Duramax serpentine belt routing diagram

2.8L Duramax serpentine belt routing diagram, Colorado/Canyon pickups

2.8L Duramax serpentine belt routing diagram

2.8L Duramax serpentine belt routing diagram, Express/Savana vans