John S.
4/14/2017
I called WW Williams, an authorized Allison Dealer, in Phoenix about a delay shift problem on my Allison transmission installed in my Tiffin Phaeton motorhome from Pahrump, NV. Jim, the Service...
W.W. Williams
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2602 S 19th Ave
Phoenix, AZ 85009
At W.W. Williams, we proudly provide the Phoenix area with truck repair, diesel repair, generator service, and more. We are a full-service maintenance and repair shop for trucks, trailers, and commercial vehicles. We also provide sales and service for diesel engines, generators, and truck parts. We are a dealer for Detroit Diesel, mtu, Allison Transmission, Weller Transmission, Mercedes-Benz Engines, Deutz Diesel, Volvo Penta, Red Dot, and more. Our mechanics, friendly service advisors, and staff are ready to address your vehicle and equipment needs in any of our 27 working bays.
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Reviews
3.57 reviewsAlicia W.
11/5/2025
I sent my truck here for a diagnostic to find out the incorrect transmission was put into my truck by another mechanic. I picked my truck up Tuesday morning 11/4/2025 and called back today to get...
Chance V.
3/31/2023
We brought our semi in to have them take a look at it. We advised the gentleman to please make sure to contact us before doing anything. He didn't know how much it would be to do a diagnostic....
Bill M.
10/19/2019
I am very pleased with the people in the Phoenix location. Vannessa at the front desk was polite, had a great personality, knew what my problem was, and she even stayed over to make sure I was...
Brian C.
1/22/2022
I took a truck here and found them to be extremely honest and fair with their pricing. Service writer was great. I've seen a lot of shops over the years but highly recommend this place.
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