I've done mechanical work on cars since the mid-60's and have never come
across such an engineering screwup as I did today.
I was attempting to install new spark plugs in my 2003 S-10 with the 2.2l
On cylinder #3, counting from the front of the engine, the air
conditioning mounting bracket overhangs the bore in the cylinder head for
inserting the spark plug socket. If you tap the socket down past the
bracket, like I did, removal is impossible with the plug removed and in the
socket. Even reinserting the old plug I was unable to remove the socket.
Thirty minutes of thinking and thrashing and cursing GM engineers, I was
finally able to liberate my socket with judicious use of a cold chisel and
hammer (After I discarded the idea of using the acetylene torch), and return
my now 3 cylinder engine back to 4 cylinder operation, albeit with old
Obviously engineered by someone at GM who never worked on cars.