LSBrick

iTrader: (2)

I had car year and half no problems other than if I let it sit a couple days I had to jump the battery. Now that I might sell car I figured I would put a new battery in. After the swap I get codes p0452 and p1639 and sometimes the fuel gauge will not work and check gauges light comes on. Never had problems before hand. I drove the car several times and cleared codes, unhooked battery and nothing doing codes come instantly back. Any ideas on what to check. I did clean some of the grounds under hood although the car is clean inside and out no rust anywhere. Thanks