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The Sierra is a truck that is manufactured by General Motors Corporation. Currently there are three versions of the Sierra which include the regular cab, crew cab and hybrid crew cab.
Yes u can go bigger if u want
6.5"
how to replace rea pads on 2007 crew cab f150
10000 lbs
For crew cab models, the jack and wheel blocks are under the driver’s side rear seat.
6.5
6.5"
The crew cab is a popular feature on many larger pickup trucks. Models that come with crew cabs include the GMC Sierra, the Chevrolet Silverado, and the Dodge Ram.
In My extended cab Sierra the jack is located underneath the back seat on the passenger side of the truck.Depending on the type of cab you have, the location may be different but try underneath the seat.
Under dash on passenger side
The GMC Sieraa 1500 is a type of truck manufactured by GMC. GMC offers regular cab models for the Sierra 1500. Other cab models include the crew cab, and the extended cab models.