Chevrolet Colorado · Pickup
2.8L four-cylinder turbodiesel, belt-driven, interference engine — unique for a modern truck. 369 lb-ft of torque makes it a towing weapon. The emissions system is the Achilles heel: DPF clogs on short trips, DEF system fails repeatedly, 2016-2018 injectors can destroy the engine catastrophically. Discontinued after 2022. Change the timing belt at 100k mi, not 150k.
2.8 Duramax — torque monster, emissions nightmare
369 lb-ft from a 2.8L four-cylinder diesel sounds perfect for a midsize truck. The reality: DPF clogs if driven short distances, DEF system fails repeatedly, injectors on 2016-2018 models can punch holes through pistons ($15k catastrophic failure). Discontinued after 2022 — that says everything. Timing belt at 100k miles is the ticking clock. Everyone else: get the V6.
Engine Weaknesses 6
Early 2.8L Duramax injectors fail — especially #3 — punching holes through pistons and sending rods through the block. GM redesigned for 2019. Standard replacement $900-1,200; catastrophic engine failure $7,000-15,000.
Symptoms: Power loss, engine shaking, oil pouring from exhaust
The 2.8L Duramax uses a timing belt, not a chain — unique for modern trucks. GM specifies 150k-mile replacement. This is an interference engine: a broken belt destroys valves and pistons. Many owners replace at 100k mi as insurance.
Symptoms: No symptoms before failure — broken belt = engine destruction
Short trips prevent proper DPF regeneration, leading to soot buildup and limp mode. GM Emission Recall 17337 addressed ECM not illuminating MIL. Not a truck for short commutes.
Symptoms: Warning lights, limp mode, reduced power, poor fuel efficiency
DEF injector fouling, pump failures, and sensor malfunctions trigger limp mode. GM's response was inadequate — a class action investigation was launched. Owners report repeated dealer visits with temporary fixes.
Symptoms: Service Exhaust Fluid message, speed limited to 65 mph, countdown to 4 mph limp mode
Electronic turbo actuator can fail, causing loss of boost. Turbo bearing wear at high mileage leads to oil leaks into exhaust. Replacement turbo (Garrett GTB1752VKL) runs $1,500-2,500 installed.
Symptoms: Significant power loss, turbo whistle changes pitch, boost reads low
Carbon deposits clog the EGR valve and intake manifold after 100k miles. City driving accelerates buildup. Cleaning restores performance temporarily; replacement is the long-term fix.
Symptoms: Rough idle, reduced power, Check Engine Light
Vehicle Weaknesses 7
Corroded connectors in the power steering system cause sudden assist loss. NHTSA recall 16V054 covered 2015 models (60,678 vehicles). 2016-2018 similar, covered by TSB 16-NA-065.
Torque converter clutch material contaminates fluid, causing shudder at light throttle. GM TSB 18-NA-355 calls for fluid flush. Class action filed covering 800k+ units.
Transfer case actuator motor, wiring chafing, or control module prevent 4WD engagement. Service 4WD message common in cold weather. Check actuator wiring at frame crossmember first.
Leaf spring packs develop metal-to-metal contact as dampers wear. GM TSB addresses it with updated damper inserts.
Thin rear frame section allows visible bed movement at highway speed. At max GVWR the frame visibly flexes.
A/C compressor clutch or high-pressure switch fails. BCM temp sensor wiring can prevent compressor engagement.
MyLink system suffers software glitches: black screens, frozen displays, Bluetooth failures. Reset by holding Home + Fast Forward for 10 seconds.
