Mobile Mechanic · Austin, TX
Mobile GMC Repair
& Service in Austin
We're a mobile mechanic that comes to your driveway anywhere in the Austin area and repairs your GMC on-site — Sierra AC, Yukon brakes, Acadia cooling, Terrain charging. You approve an upfront flat-rate quote before any work begins — the total price, not an hourly meter — and most jobs are finished the same visit.
Pricing
Upfront flat-rate quotes — you approve the total, not an hourly meter
Service area
Austin & west suburbs
Hours
Mon–Fri, 8am–6pm
Phone
(512) 910-5935GMC models we service
Sierra · Sierra HD · Yukon · Yukon XL · Acadia · Terrain · Canyon · Savana
What we fix
Common GMC problems we handle in Austin
Sierra and Yukon AC in a Texas July
GMC trucks share GM's known AC weak point: condensers on 2014–2019 Sierras, Yukons, and Yukon XLs develop leaks, and the first symptom is a truck that cools in the neighborhood but goes warm at highway speed. Yukons add rear-zone AC into the mix — a second system that gets ignored until the third row complains. We leak-test before recharging anything, carry both R-134a and R-1234yf, and replace condensers, compressors, and blower motors in your driveway.
The clicking dash: blend door actuators
2007–2013 Sierras and Yukons are known for blend door actuators that strip their plastic gears and click behind the dash — then one side blows hot while the other blows cold. Multi-zone Yukon systems have several of them, and they rarely fail all at once. Finding the right one and replacing it is a standard mobile job for us.
V8 maintenance at 100k: water pump, plugs, coils
The 5.3L and 6.2L V8s in Sierras and Yukons hit 100k with a predictable list — external water pump starting to seep, original plugs at the end of their life, the occasional coil missing under load. All of it is accessible, front-of-engine work we do on-site in one visit.
Denali electrical loads: batteries and charging
Denali trims carry a lot of electronics, and they're hard on batteries — especially batteries already cooked by three Austin summers. A weak battery in a loaded Yukon Denali causes strange complaints long before it fails to crank: flickering screens, warning lights, features going in and out. We load-test the battery and verify charging output before replacing anything, then fit the correct battery for the truck.
Towing wear: brakes, bearings, front ends
Sierras that pull boats and trailers around the Hill Country wear brakes and hub bearings ahead of schedule. A hum that rises with speed, a wander under trailer load, uneven pad wear — we road-test, inspect the whole front end, and replace what's actually worn: hubs, ball joints, tie rods, sway bar links, shocks.
The service menu
GMC services we do at your home or office
AC — recharge (R-134a and R-1234yf), condenser, compressor, blend door actuators, blower motor, rear-zone systems
Brakes — pads, rotors, calipers, hoses, fluid flush; Terrain through Sierra 3500HD
Charging system — battery, alternator, starter, with proper load testing first
Suspension & steering — hub bearings, ball joints, control arms, tie rods, sway bar links, shocks, struts, CV axles
Cooling system — water pump, thermostat, radiator, hoses, coolant flush
Engine service — spark plugs, ignition coils, sensors, belts, oil service
Diagnostics — GM-specific fault codes beyond generic OBD, with a written report
Pre-purchase inspection — used Denalis carry premium prices; verify before you pay it
For major internal work — head gaskets, timing jobs, exhaust, and internal engine or transmission repair — we'll refer you to a shop equipped for it.
Pricing
Upfront flat-rate quotes
Upfront flat-rate quotes before any work begins — you approve the total price, not an hourly meter. The quote comes before the wrenches, and the total doesn't move after you approve it. No shop overhead, no waiting room, no shuttle.
Reviews
What customers say
“ACME Auto has the most reliable and competent mechanics out there! I can tell Griff and Max put pride in their work as they want the best for their customers. They are my go to when I need an issue fixed on my car, and it's super convenient that they come to you.”
Brooke Simons
Google Local Guide
“If there was an award for Best Mechanic in Austin, Griff would win every year! I cannot say enough about Griff. He is an absolute lifesaver and legend of a guy.”
J. D.
Google Local Guide
More reviews: ACME Autoworks on Google →
Questions
Common questions about mobile GMC repair
How much does mobile GMC repair cost in Austin?
We quote every job upfront as a flat rate — you approve the total price before any work begins, not an hourly meter. The number comes before the wrenches.
My Yukon cools up front but the back is warm — what is it?
Rear-zone AC has its own components, and on multi-zone systems a failed actuator or low charge shows up in the back first. We diagnose the whole system and fix the part that's actually failed.
Can every GMC repair be done mobile?
Most of what actually fails — AC, brakes, cooling, charging, suspension, ignition, sensors — is accessible work we do on-site. For major internal work — head gaskets, timing jobs, exhaust, and internal engine or transmission repair — we'll refer you to a shop equipped for it.
Do you work on Sierra HD trucks?
Yes — we carry equipment rated for 3/4-ton and 1-ton trucks. Brakes, front ends, batteries, and cooling on 2500HD and 3500HD Sierras are regular work.
What GMC models do you service?
Sierra 1500 through 3500HD, Yukon and Yukon XL, Acadia, Terrain, Canyon, and Savana vans — Denali trims included.
Can you come today?
Often, yes. Call (512) 910-5935 or book at acmeautoworks.com/book — Monday through Friday, 8am to 6pm, home or office.
Where we work
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GMC acting up?
We come to you anywhere in the Austin area. Most jobs done same day.