To answer your question, I need to know the year and engine size. If you do not know (for sure), post the VIN# here and I will decode it for you. Your VIN# is on top of the Dash board, drivers side. It is only visible from outside the car looking through the windshield. Cadillac Man
unscrew the bolts and take the seat out
by removing the head bolts
The torque specs for a Cadillac depend on which engine it has. For most 425, 572, 368, and 500 engines, the torque for the head bolts is 115 ft. pounds. The torque for the cam bolts is 25 ft. pounds, and the torque for the valve covers is 10 ft. pounds.
replace head, head gasket, and head bolts.
To remove the seat in a 2001 Cadillac DeVille, start by locating the four bolts that secure the seat to the floor. These bolts are typically located at each corner of the seat. Use a socket wrench to loosen and remove the bolts. Once the bolts are removed, carefully lift the seat out of the vehicle, making sure to disconnect any electrical connections if applicable. Be sure to keep track of all bolts and connections for reassembly.
Headgaskets or Stripped Head Bolts
Begin by removing the alternator belt. Remove the wiring harness from the back of your alternator. Remove the alternator retaining bolts. Reverse the process to install your new Cadillac alternator.
take out the cylinder head bolts
visual of head bolts on 1999 northstar
remove positive wire from battery.remove the radiator fan, remove the alternator bolts and wiring. remove the small panel under the radiator and - tadaaah!
Anytime you remove the head bolts, replace them with new ones. If one is broken off in the head, use an Easy Out Extractor to remove the old bolt. Any auto parts store will sell or rent you the tool.
With a flat head screw driver. :-)