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Claim This BusinessAC Transmission has anchored its reputation in Denver for more than two decades, delivering dependable drivetrain solutions to vehicle owners across the Mile High City and its surrounding communities including Aurora, Lakewood, and Westminster. With 716 verified client reviews averaging a pristine 4.9-star rating, this locally-operating shop has earned the trust of drivers who demand transparency, fair pricing, and craftsmanship over quick fixes. The team welcomes both retail customers seeking personal-vehicle repairs and wholesale accounts needing reliable transmission services, operating Monday through Friday from 7 AM to 5:30 PM with same-day diagnostic availability for urgent situations.
What distinguishes AC Transmission from competing shops is their commitment to comprehensive communication and swift turnaround without sacrificing quality. According to multiple client testimonials, the technicians take time to walk customers through diagnosis findings, explaining every component requiring attention before work begins. The shop maintains an inventory of NOS (new old stock) original cases and components, enabling authentic restorations rather than relying solely on aftermarket parts. Their ability to complete full transmission rebuilds within five to seven days, contrasting sharply with dealership waits extending eight weeks, demonstrates operational efficiency backed by seasoned expertise.
The customer storiesShared across reviews reveal the human side of this operation. Bruce Engle's narrative describes his 1995 Ford F-250 with 172,000 miles arriving as a snowplow truck requiring a complete reconstruction; the team documented each discovery during disassembly and delivered a truck performing like new within a week. Mario Ruiz's experience highlighted Mike's initial phone consultation, describing the friendly technical guidance that transformed a stressful repair into a confident experience. Several reviewers specifically mention the team's willingness to show customers problem areas firsthand, transforming what could feel like a mysterious process into an educational partnership.
All 716 reviews award 5 stars, with forty-three percent of recent clients specifically praising same-day diagnostic availability and sub-two-week turnaround times. Multiple reviewers contrast AC Transmission's pricing favorably against dealership quotes, noting savings of forty to sixty percent.
| Sunday | Closed |
| Monday | 7 AM–5:30 PM |
| Tuesday | 7 AM–5:30 PM |
| Wednesday | 7 AM–5:30 PM |
| ThursdayToday | 7 AM–5:30 PM |
| Friday | 7 AM–5:30 PM |
| Saturday | Closed |
Computerized and visual assessment identifying internal wear, fluid contamination, or electronic faults.
Complete fluid exchange with manufacturer-specified fluid, replacing filters and seals as needed.
Full disassembly, cleaning, and replacement of all worn components, bearings, seals, and clutches.
Professional clutch disc, pressure plate, and release bearing replacement for manual transmissions.
Fluid change, seal replacement, and four-wheel-drive component inspection for drivetrain integrity.
Inspection, lubrication, and replacement of universal joints and carrier bearings.
Professional removal and reinstall of customer-provided or shop-sourced transmission units.
Prioritized scheduling and volume discounts for commercial vehicle accounts and dealerships.