The all-new 2018 Traverse launched with the 9T50 9-speed auto and 3.6L LFY V6. First-year teething includes 9-speed shudder, AC condenser failures, stop-start issues, and infotainment glitches. Powertrain is otherwise reasonable.
2018 is the launch year of the redesigned Traverse. Expect more software, sensor, and minor teething issues than later 2020+ model years.
GM 9T50 9-speed in 2018 Traverse can shudder under light throttle and harsh-shift. TCM reflash and Mobil 1 ATF service typically resolves.
Shudder Diagnosis →AC condenser leaks early on 2018-2020 Traverse. Out-of-warranty fix runs $900-1,400 at dealer.
AC Diagnosis →Auto stop-start can fail to restart or restart roughly. Often traced to weak AGM battery or BCM software.
Run an AI diagnosis →3.6L LFY V6 (some early units) experiences lifter tick from AFM components. Multiple class action discussions; reach out to dealer.
View P0300 Diagnosis →Chevy MyLink occasional freezes, Bluetooth drops, and CarPlay disconnects. Software updates at dealer.
Run an AI diagnosis →Power tailgate struts and module faults reported. Most are out-of-warranty after 36 mo/36K mi.
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Some 2018 Traverse rear brake caliper pistons could corrode. Free inspection at Chevy dealers.
GM TCM reprogramming and Mobil 1 ATF service for 9-speed shudder on 2018 Traverse and other GM crossovers.
Certain 2018 Traverse rear seat frame welds may not meet strength requirements. Free inspection and replacement.
If your Traverse is throwing a check engine light, these are the codes most commonly tied to the problems above. Click any code for full diagnosis steps and typical repair costs.
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Below average for a 3-row SUV. First-year redesign brought 9-speed and AC issues. 2020+ shows improvement.
Shudder and harsh shifts. TCM reprogram with Mobil 1 ATF spec typically resolves most cases.
A subset of 3.6L LFY V6 engines exhibit lifter tick from AFM. Discuss with dealer; some VINs covered under powertrain warranty.
Usually weak AGM battery or BCM calibration. Battery test first; reflash if battery is good.
2020+ has refined software and updated AC components. 2018 only at a discount and after TSB work is verified.
150K-200K miles with regular maintenance. Lifter issues, if they appear, often hit before 150K.