VinCanary

Reliability report · 2018 Chevrolet Equinox · Updated July 2026

First year of the downsized third generation — the 1.5T's reduced-power and cooling gremlins arrive here.

2018 launched the third-generation Equinox on a lighter platform with small turbo engines — mostly the 1.5-liter turbo (engine code LYX), with a 2.0-liter turbo and a rare 1.6 diesel above it. The launch brought a new set of problems: 'engine power reduced' messages, coolant leaks, and a 6-speed automatic that shudders.

The good news is that GM documented most of it — a Customer Support Program for the 6-speed, a cold-weather charge-air-cooler service update, and a service bulletin for the hard-brake-pedal complaint. The catch is that a bulletin isn't a recall: some of these are owner-pays repairs, and the five actual safety recalls (fuel pump, driveshaft, window glass, brake caliper, start-stop) only help if they were completed. Buy one with the paperwork, not on faith.

Evidence: 388 NHTSA complaints · 5 recall campaigns · 6 mechanic & forum sources

Canary status

Squawking

What that means: 388 federal complaints and five recalls in the first year of the new, lighter, turbocharged Equinox. The signature problems — 'reduced engine power,' coolant leaks, and 6-speed shudder — mostly have a GM program or bulletin behind them, but only if the previous owner used them.

CalmChirpingSquawkingFainted

This status assumes the riskiest common powertrain — see the Equinox engine guide.

388

Federal complaints

5

Recalls

several hundred+

Charge-air-cooler replacement out of warranty

modest, often warranty-era

Duct retainer / clamp fix (bulletin)

Known issues

Ranked by the cost of ignoring them. Every claim carries its source.

"Engine power reduced" — the charge-air-cooler disconnect (1.5T)

major
  • 1.5L turbo I4

The defining gen-3 drivability complaint: a sudden 'engine power reduced' message and limp mode, sometimes at highway speed. On the 1.5T the charge-air-cooler outlet duct (the pipe from the intercooler to the throttle body) can pop loose under turbo boost, and in cold weather ice or sludge accumulates in the charge-air-cooler and crankcase-ventilation system. GM's fixes evolved into formal action on the 2019s (an emission recall and a support program) and a 2018–2022 cold-weather service update that adds a thermal wrap and reprograms the computer. On a 2018, a recurring reduced-power message plus codes like P1101 or P0299 points straight here. Ask whether the charge-air-cooler work was done.

What to check

Pink and cleanServiced. Proceed.

Dark brownDamage underway.

This is a 1.5L turbo I4 problem. The 2.4L Ecotec I4, 2.0L turbo I4, and 1.6L turbodiesel don’t share it.

Which engine is in the one you found? →

Duct retainer / clamp fix (bulletin)

modest, often warranty-era

Charge-air-cooler replacement out of warranty

several hundred+

Sources: NHTSA complaint database, 2018 Equinox · NHTSA manufacturer communications (CSP 18277; charge-air-cooler service updates; brake-assist TSB 10205549; recall documents) + independent gen-3 mechanic transcripts

Coolant leaks and overheating (1.5T)major

  • 1.5L turbo I4

The 1.5T's cooling system is a weak spot — thermostats, coolant sensors, and especially the water pump fail, and one 2018 owner names the specific water pump part (55513550) as a common overheat/leak source. The real risk is that the 1.5T can overheat if coolant drops unnoticed, and overheating threatens the head gasket. On a test drive, watch the temperature gauge, look for coolant weeping at the pump, and check the reservoir. This is a repair pattern, not a recall — budget for it on a higher-mileage car.

Sources: NHTSA complaint database, 2018 Equinox · NHTSA manufacturer communications (CSP 18277; charge-air-cooler service updates; brake-assist TSB 10205549; recall documents) + independent gen-3 mechanic transcripts

several hundred each

Water pump / thermostat replacement

into the thousands

Overheat damage (head gasket)

6-speed automatic shudder — GM Customer Support Program 18277moderate

  • 1.5L turbo I4

Owners report the six-speed automatic (option code MNH) shuddering, hesitating, and shifting roughly. GM ran Customer Support Program 18277 — a CSP is a quiet extended-coverage program — for 2018–2019 units built without a transmission-case cup plug, which compromises internal lubrication and wears the transmission early. Symptoms are exactly the noise and rough shifting owners describe. Ask whether CSP 18277 was performed; if the transmission shudders on the drive and it wasn't, that's leverage or a walk-away.

Sources: NHTSA complaint database, 2018 Equinox · NHTSA manufacturer communications (CSP 18277; charge-air-cooler service updates; brake-assist TSB 10205549; recall documents) + independent gen-3 mechanic transcripts

$0

Under CSP 18277

Hard brake pedal — vacuum pump / Service Brake Assistmoderate

  • 1.5L turbo I4

A scarier pattern that grows in the later gen-3 years but starts here: the brake pedal suddenly goes rock-hard and the car barely stops, with a 'Service Brake Assist' message. GM's service bulletin (internal 10205549, DTC P0557) ties it to the brake vacuum pump on 2018–2021 cars. This never became a recall, so it is an owner-pays repair. If the brake pedal ever felt unusually firm, treat it as this until proven otherwise, and have the pump checked.

Sources: NHTSA complaint database, 2018 Equinox · NHTSA manufacturer communications (CSP 18277; charge-air-cooler service updates; brake-assist TSB 10205549; recall documents) + independent gen-3 mechanic transcripts

a few hundred to ~$1,000

Brake vacuum pump replacement

2.0T and 1.6 diesel — the rarer enginesminor

  • 2.0L turbo I4
  • 1.6L turbodiesel

Above the 1.5T sat a 2.0-liter turbo (code LTG) and, rarely, a 1.6 diesel (LH7), both 2018–2019 only. Mechanics flag the 2.0T for intake-valve carbon build-up (direct injection), possible piston cracking under hard use, and high-pressure fuel-pump wear; the 1.6 diesel for EGR and diesel-particulate-filter clogging and pricey emissions repairs, especially on short city trips. Both are uncommon, but if you're looking at one, price the maintenance accordingly and confirm the diesel wasn't a short-trip city car.

Sources: NHTSA manufacturer communications (CSP 18277; charge-air-cooler service updates; brake-assist TSB 10205549; recall documents) + independent gen-3 mechanic transcripts

It started shifting funny at 70, then the check-engine light, then reduced power mode — the dealer scanner said nothing was wrong.
6 mechanic & owner sources

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Open recalls

Free fixes at any Chevrolet dealer. Run the VIN — “completed” isn’t always completed.

  1. 18V358High-pressure fuel pump may detach from its mounting flange and damage the high-pressure fuel line — fire risk. Free pump and pipe replacement (GM 18188).open
  2. 17V516Right-front intermediate driveshaft may fracture and separate — loss of propulsion or rollaway. Free driveshaft replacement (GM 17329).open
  3. 18V252Front door window glass may not be properly tempered (FMVSS 205) — can shatter into large pieces. Free glass replacement, 2018 Equinox only (GM 18136).open
  4. 18V576Rear brake caliper pistons with insufficient coating can form gas pockets and reduce rear braking. Dealers bleed the brakes free (GM 18279).open
  5. 20V668Start/stop transmission accumulator endcap may be missing bolts — trans fluid leak, possible loss of propulsion or fire. Free inspection/replacement (GM N202313440).open

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