"history of being very durable"
 . 
The following GMs have a history of being very unreliable, actually "worst of the worst" reliability: 
"These 2006-15 models have a record of below-average overall reliability. ... they’re models with much-worse-than-average overall reliability based on multiple years of data. We recommend skipping all of them" 
CHEVROLET 
Avalanche, Camaro, Cobalt, Colorado, Corvette, Cruze, Equinox, HHR, Impala, Malibu, Silverado, Sonic, Suburban, Tahoe, TrailBlazer, Traverse, Uplander 
BUICK
 Enclave, LaCrosse, Lucerne, Rainer, Regal, Rendezvous, Terraza GMC Acadia, Canyon, Envoy, Sierra, Terrain	, Yukon, Yukon XL 
CADILLAC 
ATS, CTS, DTS, Escalade, SRX, XTS PONTIAC G5, Montana SV6
 . 
http://www.consumerreports.org/used-car-buying/used-cars-to-avoid-buying/