Engine and Transmission
The Trax runs one powertrain across the whole lineup: an ECOTEC 1.2L Turbo
paired with a 6-speed automatic. No trim variants, no optional engine
upgrades.
The Trailblazer offers two engines, and which one comes standard depends on both
trim and drivetrain. The ECOTEC 1.2L Turbo is standard on the LS FWD and LT
FWD, with the 1.3L Turbo available as an upgrade on both. The ACTIV FWD and RS
FWD come standard with the 1.3L Turbo, with no 1.2L option available. Every
AWD Trailblazer, regardless of trim, runs the 1.3L Turbo as the only engine
available.
| Trailblazer Trim |
FWD Engine |
AWD Engine |
| LS |
1.2L Turbo std / 1.3L Turbo avail |
1.3L Turbo |
| LT |
1.2L Turbo std / 1.3L Turbo avail |
1.3L Turbo |
| ACTIV |
1.3L Turbo |
1.3L Turbo |
| RS |
1.3L Turbo |
1.3L Turbo |
Transmission on the Trailblazer follows a firm rule tied to drivetrain rather
than trim. Every FWD Trailblazer uses a continuously variable transmission
(CVT), and every AWD Trailblazer uses a 9-speed automatic. A CVT moves through
a continuous range of gear ratios using a variable pulley system rather than
stepping through fixed gear positions, producing smooth power delivery without
discrete gear shifts. The 9-speed automatic works through defined steps. The
practical implication is that choosing AWD on any Trailblazer trim
automatically changes the transmission from CVT to 9-speed automatic,
regardless of which trim level you select.
Both vehicles include an automatic engine stop-start system standard, which
briefly shuts the engine at a stop to reduce fuel consumption and restarts it
when the driver releases the brake. The Trailblazer also includes a
driver-selectable override for the stop-start system as part of its standard
mechanical features.
The Trailblazer is the only one of the two with engine choice and transmission
variety. The Trax keeps it consistent: one engine, one transmission, one
drivetrain across all five trims.