Do you have to pull the engine change head gaskets on a 1998 Cadillac De ville with 4.9 liter V8?
No, you do *not* have to pull the engine to change the head gaskets on a 1998 Cadillac DeVille with a 4.9L V8 (Northstar engine). While a challenging job, it's generally considered doable with the engine in the car. However, it's a significantly more difficult and time-consuming repair than on many other engines. Access is tight, and you'll need specialized tools and a good deal of mechanical aptitude.