Collection: Buick

Buick has shared GM platforms with other brands throughout its history — the LeSabre and Park Avenue shared the H-body with the Cadillac DeVille; the Rendezvous shared its front subframe with the Pontiac Aztek; the Enclave shared the GMT Lambda platform with the GMC Acadia, Chevrolet Traverse, and Saturn Outlook; and the LaCrosse and Allure shared the Epsilon platform with the Cadillac SRX on later generations. Understanding these cross-references is the most practical knowledge a Buick owner can have for used parts sourcing.

Buick Models & GM Platform Cross-Reference

Notes on Key Parts

Rendezvous Front Subframe — AWD vs. FWD

The Buick Rendezvous and Pontiac Aztek front suspension crossmember K-Frame is available in both AWD and FWD configurations — these are different assemblies and not interchangeable. Always confirm your drivetrain before ordering. Both variants cross-reference between the Rendezvous and Aztek.

Enclave / Acadia / Traverse / Outlook Transfer Case

The GMT Lambda transfer case fits all four nameplates — Buick Enclave, GMC Acadia, Chevrolet Traverse, and Saturn Outlook (2007–2012). The expanded combined donor pool from all four platforms makes this one of the most available transfer case units in our inventory.

LaCrosse EPS Rack and Pinion

The Buick LaCrosse electric power steering rack (belt-driven, opt GNA/NJ2) is a platform-specific unit. Always confirm your option codes before ordering — LaCrosse was available with both conventional hydraulic and electric power steering depending on trim and production year.