It is vary complex. They are around $700 a pop and used ones are about half that. I would recomend taking it in to get replaced. You'll know what i mean after you ruin one
Pontiac Montana was created in 1999.
Cam sensor location 02 pontiac montana 3.4
alternator
215/70R15
with explosives
p134
For a Pontiac Montana the battery is a group 78. Follow this link for dimensions.http://www.rtpnet.org/teaa/bcigroup.html
drums
You can find the oil pressure sensor for your 1999 Pontiac Montana on the front of the engine. The low pressure oil sensor will be just below the left cylinder head.
The firing order of a 1999 Pontiac Montana mini van is 1, 2, 3, 4, 5, 6. The number one cylinder is located at the front left side of the engine.
Yes, it is accessed inside the glove compartment
right next to the oil filter.