I need a size of my 2002 saturn vue V6 battery

2002-2003 3.0 L 54-Degree V6 181 hp (135 kW) 195 lb·ft (264 N·m)
Both years use timing belts. Reference Rockauto.com

it would be because its a V6 so has two banks set at 60 degrees too each other follow this u-tube link as gives an excellent view of why
Timing Marks Saturn Vue 3 0 Litre V6

For exact step by step dual cam timing mark setting.Click the link below :----http://technoanswers.blogspot.in/2012/02/saturn-vue-30-dual-over-cam-timing-mark.html
----------This will help.Thanks.

sounds like a bad crank sensor,nothing you did wrong,just a common 3.0 v6 saturn issue,its located on the front of the engine block under the car by the oil filter housing,,,like $115 for the sensor

I have a 2002 saturn vue. Same thing..sounded like a jet engine ...loud humming as I accelerated . It got increasingly worse. It turned out to be the front wheel bearings. Replace them, now the noise is half as loud...have to do the rears also! 93,000 miles on it. Also, don't forget to replace the timing belt. It it goes too long and breaks, it will trash the engine...

When and how to change spark plugs for 2002 saturn vue v6?

you may have to replace body control module, I had to tow my 2002 saturn vue v6 about two years ago to the dealer approx $500.

I think you bought the dreaded Opel v6 in your Saturn. If it has six rubber hoses on the intake tubes, thats the Opel. A couple of years later, Saturn started using Honda v6's. A royal pain to replace the plugs, suggest a repair shop because the intake has to come off.

Have the cooling system flushed- sounds like a clogged or faulty heater core. Can also be blown out with compressed air from the firewall hoses.i fixed mine like this- Make sure it is cool b4 removing hoses

The diagram to install the belt is under the hood near the engine emissions sticker, if not there near the belt.