You CAN do it yourself, there are revised sensors available.
The top one is gray, the bottom one will be black. The old top one is probably tan in color.
It's easy if you have the right tools.
Basically you just need to raise the front end up and do what's listed above.
Just remove what you are comfortable taking off and get your 10mm in there and loosen the bolts. They turn easy once you break them loose... (usually)
The connectors can be hard to get off and on so take your time.
If they have the red CPAs in them those must come out first, make sure to put them back, they keep the connector secure.