Cognitive-behavioral therapies (CBT) that promote pain self-management can lead to symptom reduction, improved quality of life, and decreased healthcare use. However, most people with SCD do not receive CBT-based treatment due to barriers such as poor accessibility, limited availability of professionals, and high costs. First, the investigators plan to apply a user-centered design approach to develop and refine the iCanCope with SCD program. Second, program feasibility and initial program effectiveness will be determined through a pilot three-site randomized controlled trial. The investigators will determine study accrual and dropout rates as well as levels of patient acceptability and engagement. Preliminary effectiveness will be determined in youth receiving treatment compared to attention control on a range of physical, behavioral, and psychosocial outcomes assessed at post-treatment and 6-month follow-up. Third, moderators and mediators of treatment effect will be tested by examining whether differences in self-efficacy and patient activation predict changes in pain and functioning. These results will enable a future full-scale randomized controlled trial.