probably a little late, but http://www.silveradoss.com/forums/topic/56992-5-steering-wheel-control-light-fix/
I've done this to various electronics before. I'm going to have to do this for my GP. These are similar to what I've used before. Too bad you can't just go to Radio Suck anymore and pick them up. I used 50 mA bulbs, but these might work:
https://www.amazon.com/HOTSYSTEM-Indicator-Speedometer-Backlight-Lighting/dp/B00RZ4YRS0/ref=pd_lpo_60_t_1/134-2312371-2069036?_encoding=UTF8&pd_rd_i=B00RZ4YRS0&pd_rd_r=cd16fc24-3114-4f09-a6cd-4a836d823ce7&pd_rd_w=LWFze&pd_rd_wg=mT4Ww&pf_rd_p=7b36d496-f366-4631-94d3-61b87b52511b&pf_rd_r=DPGE2N01YQ72VFXXZJFE&psc=1&refRID=DPGE2N01YQ72VFXXZJFE
I'm not sure if these would work:
https://www.amazon.com/Deezio-GY6-35-Halogen-Lumens-4-Pack/dp/B077X3FWQY/ref=sr_1_1?dchild=1&keywords=50ma+12v+pin+lamp&qid=1606936026&sr=8-1