Close-up view of a car's internal clutch mechanism and wiring harness

Transmission Service

Transmission repair from Northwest Express Auto Care fixes slips, leaks, and rough shifts, restoring smooth, efficient gear changes and long-term drivetrain reliability.

What’s Included

Scan for fault codes and road-test shifting

Inspect fluid and internal components

Services offered varies based on transmission type and shop capabilities, see your shop for details.

When To Get This Service

Have your transmission inspected at the first sign of trouble—early repair prevents costly internal damage.

Look for these warning signs:

Gears slipping or engine revving without acceleration
Hesitation, jerking, or rough shifts between gears
Clunking, humming, or whining noises while driving
Reddish or dark fluid leaking under the vehicle
Burning smell after driving or hot-fluid odor
Transmission or check engine light illuminated

We recommend replacing transmission fluid every 30,000–60,000 miles for automatics and 60,000–100,000 miles for manuals, following your owner’s manual.

Heavy-duty industrial machinery being maintained by skilled workers, emphasizing safety and operational protocols,

Your Service Questions, Answered.

We’ve put together the most important transmission information to help you drive with confidence. Need more help? Just give us a shout!

What transmission do I have?

Manual vehicles use a clutch to connect and disconnect the transmission to the engine by the use of a pedal next to the brake pedal. If you are required to shift the vehicle yourself, your transmission is manual. Otherwise, your vehicle is likely an automatic or CVT. To confirm your transmission type, refer to the owner’s manual or check just inside the driver’s side door to locate a white sticker. The sticker contains specific details on your vehicle including the year it was produced, transmission type, engine specifications, and other pertinent information. If you are unable to locate the information for your vehicle, contact us and provide your VIN or license plate number and we’ll be able to inform you what kind of transmission your vehicle has.

How to check transmission fluid?

Many new transmissions do not have the traditional dipstick for checking fluid levels and its condition. In many cases, you will need to seek out an automotive professional to check the fluid for you. Some vehicles require the use of specialized equipment to access the transmission.

When to change transmission fluid?

A transmission fluid change removes the bulk of dirty fluid and replaces it with clean transmission fluid. A fluid change should be performed every two years or every 30,000 miles. Alternatively, a transmission fluid flush removes all old, dirty fluid from the transmission and new, clean fluid is added. A transmission flush should be performed every three years or 45,000 miles.

What is a CVT Transmission?

CVT or Continuously Variable Transmission is a type of automatic transmission; how it operates differs in comparison to an ordinary automatic transmission, however. A CVT changes gears flawlessly through an infinite range of gear ratios as opposed to an automatic transmission that possesses a fixed number of gear ratios. Because the CVT has just one gear that is variable, you will not feel the shift from gear to gear as you would with an ordinary automatic transmission.