How do you remove the trim holding the radio/CD player in place? on 2004 GMC Envoy

Need to remove radio to find out why CD player is not ejecting CD. It plays just fine.

Asked by for the 2004 GMC Envoy
Stereo removal is often kind of complex and it's easy to damage trim pieces if correct removal procedures are not followed. This link is probably the best for stereo removal procedures , this link has some free stereo removal procedures for some cars . There is a company that independent auto repair shops get their information from, this same information is available inexpensively for people that work on their own cars. The information is year make and model specific, covering repair procedures, torque specifications, fluid capacities and specifications, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate . They have very clear stereo removal procedures. Once the stereo is out Google "automotive original equipment stereo repair", I've had lots of OE stereos repaired.
Thanks for the info, will check out those links.