GMC 2017 Sierra turn Indic

I have a 2017 Sierra 1500, and last year (2023) my left front turn indicator failed and , while at dealership for an oil change, they said to fix the problem it would be $1,750.00 as they would replace the "housing". I resisted for over 6 months and I had someone replace the bulb and it works fine. It, however is labor intensive to get to the bulb so the labor was over 250.00, Now the right indicator is failing and it works, doesn't work, works, doesn't work. There has to be something wrong. I'm going to check the battery to see if that is the problem (as I have read that others have remedied this problem with a new battery). To be continued.....