Chevrolet Colorado · Pickup
2.7L turbo four, detuned version of the L3B. 237 hp and 259 lb-ft — the base Colorado engine. Lower thermal stress than the 310 hp tune means longer projected lifespan. Same direct-injection carbon buildup risk. An honest four-cylinder truck motor.
2.7 Turbo base — detuned and underappreciated
237 hp and 259 lb-ft: the work truck engine. Less stress on the turbo and block than the 310 hp tune. Same electrical issues as higher trims. The honest choice for light-duty buyers who want a new midsize truck without diesel complexity.
Engine Weaknesses 1
Same direct-injection-only design as the L3B means carbon accumulates on intake valves. Lower stress levels extend time vs. the 310 hp tune. Walnut blasting recommended every 100k miles.
Symptoms: Extended cranking, rough idle, misfires at cold temps
Vehicle Weaknesses 6
Front camera module falsely detects obstacles, triggering hard AEB stops without warning. NHTSA Campaign 24V133. Multiple injury reports from sudden deceleration.
Digital instrument panel and infotainment screen go black simultaneously — losing speedometer, fuel gauge, and headlight controls. Software updates fix some cases.
Multiple owners report dead batteries on brand-new trucks — complete power loss overnight. Electrical modules may not properly enter sleep mode.
Side sensors produce false alerts or miss real vehicles. Firmware updates haven't resolved it consistently. Window controls lock during false alerts.
Rear frame section uses thin metal — bed bounces at highway speed. A 2023 ZR2 Bison suffered complete failure of all 4 bed mounts off-road.
Hard shifts between 1st-2nd, worse in cold weather. Fluid flush corrects many cases. 2024-2025 show fewer complaints.
