Transmission Repair and Service
Expert Manual and Automatic Transmission Specialists
At Harmony Automotive, we provide complete transmission repair and maintenance services for both manual and automatic vehicles in Denver, Aurora, and Northern Colorado. Our ASE-certified master technicians use factory-level diagnostic tools to accurately assess and repair transmission systems, ensuring your vehicle shifts smoothly and performs reliably.
Whether you drive a compact sedan, SUV, or heavy-duty truck, we have the expertise to service transmissions, transfer cases, differentials, and drivetrain components.
Call or text us today to schedule your transmission service or complimentary inspection.
Comprehensive Transmission Inspection — Free with Every Visit
We offer a no-cost transmission performance check to identify early signs of wear or failure. This service includes:
Fluid check: Evaluate condition, color, and odor for signs of damage or overheating
Road test: Identify slipping, hesitation, or rough shifting
Pan examination: Detect internal wear through metal shavings or debris
Lift inspection: Examine mounts, seals, U-joints, sensors, and electrical components
If your vehicle isn’t drivable, towing is available to bring it safely to our shop for diagnosis.
Understanding Transmission Function and Maintenance
Your transmission is the link between your engine and wheels, responsible for managing power delivery and vehicle performance. Over time, normal wear and driving conditions can affect its efficiency.
Common Causes of Transmission Wear
Aggressive or inconsistent driving habits
Frequent towing or heavy hauling
Operating in extreme heat or cold
Low or contaminated transmission fluid
Neglected maintenance intervals
Warning Signs of Transmission Problems
Slipping gears or delayed acceleration
Grinding, whining, or clunking noises
Fluid that is dark, discolored, or burnt-smelling
Hesitation or rough shifting
Warning lights on the dashboard
If you notice these symptoms, schedule a professional inspection immediately — early attention can prevent costly repairs.
Internal Transmission Repair Process
If internal damage is detected, our technicians perform a full teardown and rebuild process:
Remove and disassemble the transmission
Inspect all internal components for wear or damage
Replace seals, clutches, gaskets, and solenoids as needed
Reassemble and test the transmission for proper operation
We provide warranty coverage on all repairs and a follow-up inspection within 10–15 days to verify performance and ensure your satisfaction.
Why Choose Harmony Automotive
When it comes to transmission repair in Denver, Harmony Automotive delivers unmatched quality, transparency, and convenience.
Our Commitment to You
All work guaranteed in writing
Factory-level scan tools for precision diagnostics
Early drop-off and after-hours pick-up available
Financing options for major repairs
Foreign and domestic vehicles serviced
Nationwide 3-year / 36,000-mile warranty on all transmission repairs
We’re proud to stand behind our work — because your peace of mind matters as much as your vehicle’s performance.
Contact Harmony Automotive
If you’re experiencing transmission trouble, trust Denver’s leading auto repair team to restore your vehicle’s performance.
