# 1997 Chevrolet Lumina Air conditioning

**URL:** <https://community.cartalk.com/t/1997-chevrolet-lumina-air-conditioning/14529>\
**Category:** Maintenance/Repairs\
**Tags:** lumina, airconditioning\
**Created:** [May 27, 2008, 7:42pm UTC](https://community.cartalk.com/t/1997-chevrolet-lumina-air-conditioning/14529 "2008-05-27T19:42:24Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![gmusic](https://avatars.discourse-cdn.com/v4/letter/g/c37758/32.png) [@gmusic](https://community.cartalk.com/u/gmusic)\
**Post date:** [May 27, 2008, 7:42pm UTC](https://community.cartalk.com/t/1997-chevrolet-lumina-air-conditioning/14529/1 "2008-05-27T19:42:24Z")

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I have a 97 lumina, and I need to refill the R - 134a, but the low side service port and the high side service port are in the same spot. Which one is which? How can I tell which is the low side service service port.

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**Author:** ![NYBo](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nybo/32/17281_2.png) [@NYBo](https://community.cartalk.com/u/NYBo)\
**Post date:** [May 27, 2008, 7:44pm UTC](https://community.cartalk.com/t/1997-chevrolet-lumina-air-conditioning/14529/2 "2008-05-27T19:44:26Z")

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Your fill kit will only fit on the low side port. It’s the smaller (in diameter) of the two.