Take it to a pro a lot of special tools and know how req. A lot of shops won't do this job.
Cadillac stopped making the Coupe DeVille after 1993.
Head Gasket to replace
You can also purchace the tool at carquest for $18.00
cadillac catera replace valve cover gasket 1997
No tools needed, that 1997 Cadillac Deville doesn't have a timing belt.
where is the crankshaft angle sensor located on a 1997 cadillac deville.
97 cadillac deville heater controll
1997 Cadillac Deville 4.6L SFI DOHC 8cylThe Spark Plug Gap.050 (In thousandths of an inch)