The man in his 80s was taken to hospital after the incident on Sheepfoot Lane at around 8:10am on Monday, April 3, 2023.
He suffered hip and pelvis injuries, but died on 7 April 2023.
The driver of a Hyundai i10 car remained at scene and assisted officers with enquiries.
No arrests have been made.
GMP’s Serious Collision Investigation Unit (SCIU) is appealing for anyone who may have witnessed the incident to come forward.
They are also keen to speak to anyone who may have any footage, including dashcam and mobile phone footage from the area in the moments leading up to the collision.
Anyone with any information is asked to contact police on 0161 856 4741 quoting reference number 644 of 03/04/2023.
Alternatively, details can be shared on GMP's LiveChat function on the website, www.gmp.police.uk, or via the independent charity, Crimestoppers, anonymously on 0800 555 111.
