If 'Googling' seems too complicated a task, the related link
below may prove invaluable.
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If you do not know how to do this then you should leave it to a
mechanic. Replacing drum brakes is not an easy task anyways.
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Replacing the timing belt, on your Cadillac Escalade, is a very
detailed and complicated task. The task will begin with removing
the engine. A full description can be obtained from a Cadillac
dealership.
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If you mean Rube Goldberg, he came up with the idea of a machine
which performs a simple task in a much more complicated way.