Grandma's Speed Shop

Grandma's Speed Shop in Roseville, Michigan has earned a 4.7-star rating across 63 customer reviews, establishing themselves as a trusted name for diesel engine repair in the Detroit metro area. This specialized shop focuses exclusively on diesel-powered vehicles, providing services ranging from routine maintenance to complex engine rebuilds and performance upgrades. Their facility serves customers throughout Macomb County and the greater Roseville community, handling repairs on light-duty trucks, commercial vehicles, and performance diesel applications.

The shop distinguishes itself through partnerships with leading diesel performance brands, including Banks Power products. Website visitors note their expertise with popular diesel platforms like the 7.3L Power Stroke, 6.0L Power Stroke, and 6.7L Cummins engines. Their service menu includes bulletproofing packages, transmission work, and fuel system upgrades, positioning them as a go-to resource for diesel owners seeking both reliability improvements and performance enhancements.

Reviewers describe specific positive experiences with the team. One customer recounts having their 6.0L truck bulletproofed with new injectors and tuner corrections, noting the vehicle performs dramatically differently after the work. Another reviewer mentions the shop completed a Banks Monster Ram installation on their 2019 Ram while identifying additional issues during the process. A third customer praises the team's ability to source parts during shortages and provide detailed guidance on preventing future problems with their 2020 eco diesel.