At around 11.20am on Thursday 17 September 2020, police were called to reports of a collision on the M60, near junction 24 for Denton.
Officers attended and established that a Honda motorcycle had collided with a stationary Skoda Fabia.
The motorcyclist - a man in his 60s - was taken to hospital with serious injuries but has since sadly passed away.
No arrests have been made and an investigation is underway.
Sergeant Marie Eldred, of GMP's Serious Collision Investigation Unit, said: "Sadly this man has now passed away and all are thoughts are with his friends and family, who are being supported by specialist officers at this incredibly difficult time.
"Our enquiries remain ongoing as we determine the full circumstances surrounding this tragic incident. We would like to take this opportunity to appeal again to anyone who may have any information or dash-cam footage to contact police and assist us in our enquiries.
"We are still keen to speak to the driver of a blue HGV who we believe may have footage or information which could assist us."
Anyone with information should contact GMP's Serious Collision Investigation Unit on 0161 856 4741 quoting incident 1130 of 17/09/20, or the independent charity - Crimestoppers, anonymously, on 0800 555 111.