Vacuum Line

Asked by Btune Oct 11, 2016 at 10:50 AM about the 2008 Cadillac CTS 3.6L DI RWD

Question type: Maintenance & Repair

After changing the battery on a 2008 CTS I found a
vacuum line disconnected in the battery
compartment in the trunk. Where does the line
hook up?

5 Answers

101,335

It's a battery vent tube, not a vacuum line. Since the battery is now in the passenger cabin, it has to be vented. The OEM battery likely had a hole that the tube plugged into, then the vent line ran out the wheel well. Some non-OEM batteries do not have the vent hole, so the tube is not needed.

7 people found this helpful.

Thanks to both of you. Replacement battery had the vent hole and easily hooked up the vent line.

50

Thank U thank U thank U I replace my battery and I saw that Grant line after I put the new battery in it I thought it was something that I’ve mistakenly unhitched phone somewhere but I notice I couldn’t find anywhere for it to go and I noticed the answers that was given in this particular site was it’s a battery vent line did not know OEM battery some came and had to be vented some don’t I was afraid I had tore something up and didn’t know what it was thank you thank you thank you Hartford Chestnut Paterson New Jersey via North Myrtle Beach South Carolina

5 people found this helpful.
20

This information is very informative, At first I thought i really did something wrong...... Thanks everyone.....George P

2 people found this helpful.
10

I also thank you. I was afraid that I broke my wifeys car Rey V.

1 people found this helpful.

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