2018 Chevrolet Colorado

The 8-speed automatic transmission develops a noticeable shudder or vibration, most commonly felt between 30-50 mph during light throttle application. The shudder originates from the torque converter clutch (TCC) and has been a persistent issue across GM's 8-speed transmissions. Over 150 transmission-related complaints were filed with NHTSA for the 2022 Colorado.

Transmission fluid drain and refill with updated Mobil 1 Synthetic LV ATF HP fluid as recommended in GM Service Bulletin 18-NA-355. GM advises against torque converter replacement alone, as engineering reviews show it does not provide a long-term fix. Complete transmission replacement may be necessary for severe cases.

Certain 2022 Colorado models equipped with a manual passenger seat may have a hook attachment that was not properly welded to the inboard track of the seat frame. The hook can separate from the track, allowing the seat to become improperly anchored and potentially failing to restrain the passenger in a crash.

NHTSA recall issued. Dealers inspect the front passenger seat and replace the cushion frame if the weld is defective. The repair is performed free of charge.

The 2.5L four-cylinder and 3.6L V6 engines can develop misfires that cause rough running, power loss, and check engine lights. Common causes include carbon buildup on intake valves (direct injection engines), failing ignition coils, and fuel injector issues. The 3.6L V6 is particularly susceptible to timing chain stretch at higher mileages.

Replace failed ignition coils and spark plugs. Perform intake valve cleaning (walnut blasting) for carbon buildup on the 3.6L. Inspect and replace fuel injectors if faulty. For timing chain issues on the 3.6L, replace the timing chain, guides, and tensioners.

Owners report electrical system anomalies including intermittent loss of power steering assist, random warning lights, infotainment system reboots, and erratic gauge readings. The electric power steering can fail momentarily, especially during low-speed turns or parking maneuvers, requiring sudden physical effort to steer.

Inspect the electric power steering motor and wiring for faults. Update the steering control module software. Replace the steering column assembly if the electric motor has failed. Check and clean ground connections to resolve erratic electrical behavior.

The HVAC blower motor can fail, resulting in no airflow from the vents regardless of the fan speed setting. The blower motor resistor may also fail, causing the fan to only work on the highest speed setting. This makes the vehicle uncomfortable in extreme weather conditions.

Replace the blower motor and/or blower motor resistor. Inspect the blower motor wiring connector for melting or corrosion, which can indicate a resistor failure causing excessive current draw.

General Motors LLC (GM) is recalling certain 2015-2018 GMC Canyon, 2016-2017 Buick Envision, 2016-2018 Chevrolet Colorado and Malibu, 2017-2018 GMC Acadia, 2018 Buick LaCrosse, Cadillac ATS, Chevrolet Equinox, and GMC Terrain vehicles. The high pressure fuel pump may detach from its mounting flange, possibly resulting in the pump damaging the high pressure fuel line.

A damaged fuel line can create a fuel leak, increasing the risk of a fire.

GM will notify owners, and dealers will replace the high pressure fuel pump, and high pressure fuel pipe, free of charge. The recall began July 2, 2018. Owners may contact Buick customer service at 1-800-521-7300, Cadillac customer service at 1-800-458-8006, Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM's number for this recall is 18188.