Question about 1991 Buick Riviera
The rear transmission seal can be changed without pulling the transmission. The front seal requires the transmission to be separated from the engine. To change the rear seal you take off the drive line and use a seal puller. Head gaskets need to be replaced if you find water in the oil, have an overheating engine that runs rough or if the coolant smells like gas. One way to tell is to do a compression check on all cylinders.
Posted on Mar 25, 2011
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Posted on Jan 02, 2017
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