The GMC Sierra is one vehicle on General Motors' line of pick-up trucks. In 2011, the truck came in three models: the 1500, Hybrid and Denali. Throughout its years of production, the Sierra has seen several transmission complaints and problems.
Consumer protection and feedback sites have identified complications with a number of Sierra year-models. These include but are not limited to the 1999, 2001 and 2005 models. However, it is the 2005 Sierra that saw official recalls due to the transmission.
Some 2005 Sierra 1500s were recalled due to issues with the gear box and shaft sector. The bolt connecting the shaft to the gear was found to be problematic. Additionally, some 2005 automatic transmission Sierras were recalled because various components of the transmission, such as the shift lever, did not meet safety standards issued by the Federal Motor Carrier Safety Administration. The shift pattern indicator on 2005 manual transmissions was also a subject to recall.
In some 2001 Sierras, the speed sensor did not operate correctly. Also, 2001 manual Sierras were found to have a parking brake problem if they were equipped with either the PBR or TRW system. 2011 Sierras are subject to recalls due to the locking of the rear axle. While the latter is not a transmission problem, it might be easy to misinterpret it as such.
