Macias Diagnostics LLC

Joe Staud 

on Google

11 months ago

Mark is very knowledgeable. He knows gas and Diesel. Just picked up our Tiffin 36la and it’s all better now. This is the second or third time over the years that we trusted him. Thanks to my brother in law for recommending him many moons ago. Also thank you Mr Macias😎 

Mason Lawson 

on Google

2 years ago

Mark installed a fass system for me, the next day I had an unrelated fuel leak. I called Mark and he checked it out and fixed it up for me free of charge. Good guy and good business highly recommend. 

Brandy Ashford 

on Google

8 years ago

I went Macias Diagnostic because I had an issue with a check engine light on my vehicle and at times it wouldn't start. I was greeted by Mark. He was friendly and welcoming even though I didn't have an appointment. I could tell he was busy but he checked out my vehicle anyway. He took his time and explained to me what was going on in terms I could understand. I left my vehicle with him and was able to pick it up the next day. Other establishments (which will remain nameless) told me my problem was bigger than it was. They t... read more

Thomas Whitman 

on Google

2 years ago

I agree with all that has been said in the 5 star reviews posted here. I would rate the work "superior". You may, if you're lucky, find someone as good as Mark if you shop around. But you definitely will NOT find anyone better than Mark. As a former teacher, I would have to give them an A+++. Can't get any better than that. The + marks? That's for service above and beyond the minimum to receive an 'A'. You won't find better! 

Tony Clemons 

on Google

7 years ago

I had blown my water pump on the way back from a job in SC, googled repair shops in Cumming and called Macias. I told Mark the issue, he was very friendly and honest with letting me know about what it would cost to replace it. When he got into the engine, he found part of the serpentine belt had split away causing it to destroy my fan clutch and taking out the fan clutch wiring harness. He called me right away to inform me of the issue and the new price to get my truck back on the road. I asked him to save me the damaged... read more