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Fuel gauge doesn’t move after installing subs

1185 Views 6 Replies 3 Participants Last post by  repairman54
Hey everyone! So I have a 2013 Malibu ls(2.5lt engine) and recently installed a sub box. After the install I noticed the service airbag lights comes on and the fuel gauge doesn’t move. The fuses seem ok though I only noticed 1 for the fuel gauge. When I move the key to “ON”, it will move the needle up and down smoothly, just not when the engine is started. The lcd screen also just constantly says low fuel. I know the fuel pump module needs to be replaced but it only started happening after the install. Any advice?
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Sorry for late reply! Is this what you’re needing?
No, he asked for the U codes, which are stored differently. You are posting P codes.
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