AAMCO of San Antonio Northwest
5960 NW Loop 410, San Antonio, TX 78238
Call Today (210) 647-1161
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(210) 647-1161
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(210) 647-1161


Mon-Fri: 8 am - 6 pm
Saturday: 8 am - 1 pm
Sunday: Closed


5960 NW Loop 410
San Antonio, TX 78238

Total Car Care

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Transmission Repair & Service

Transmission Repair Technician San AntonioTx If your vehicle is going to be repaired properly, it will need to be diagnosed properly. Fortunately, this is the specialty of AAMCO centers. We will always perform our exclusive multi-point transmission scan before starting any repairs.

The AAMCO Transmission Scan service includes:

  • Checking the level and condition of the transmission fluid
  • Checking the level and condition of the transfer case and differential fluid when applicable.
  • Performing a road test to experience reported drivability issues and assess various aspects of the vehicle's performance, such as:
    • Initial engagements
    • Each drive range
    • Upshift timing and quality
    • Downshift timing and quality
    • Passing gear
    • TCC engagement
    • Neutral and reverse
    • Vibrations and noises
    • 4x4 performance
    • Park-hold

After this, the vehicle will be placed on a lift and inspected. Your AAMCO technician will check the underside of the vehicle and try to find any causes of drivability issues in the controls external to the transmission. These include:

  • Shift linkage or cable
  • TV/detent cable/linkage
  • Engine performance and engine idle
  • Harness, ground, and vacuum connections
  • Mounts
  • Final drive
  • Axles and shafts
  • U-joints/CV joints
  • Fluid retention
  • Pan gasket
  • Wire condition
  • Trouble codes from the onboard computer

Most transmission problems will be identified during these tests, and AAMCO technicians will be able to recommend and perform the necessary repairs. If the problem has not yet been identified, then your AAMCO technician will run further tests. No AAMCO technician will ever recommend repairs before knowing exactly what repairs need to be done.

Computer and Internal Diagnostics

AAMCO's high-tech computer and internal diagnostics can be used to find transmission issues that could not be found in previous tests. Since many of today's cars rely so heavily on computers, it is often the computer that is causing drivability issues. When the transmission receives the wrong signals, it runs improperly and causes drivability issues. The AAMCO Computer Diagnosis Service will help technicians find out whether an electronic component is malfunctioning. This test includes:

  • Using a computer system scanner to retrieve trouble codes from various critical computer systems.
  • Reviewing the collected data with the help of AAMCO's proprietary technical database—the most complete transmission computer diagnostic source available
  • Checking to see whether the problem is inside or outside of the transmission in the computer system by connecting the AAMCO Kwiktest™ PlusBox

Other checks performed by your AAMCO technician will include the checking of the electronic components, solenoids, sensors, and all related wiring. This test will help to determine whether any electronics need to be replaced.

AAMCO is set apart from the competition by its high standards for proper diagnoses. This even allows technicians to handle repairs more efficiently. Thanks to this unique process, we often find that transmission problems are quite minor and easily addressed. Our competitors do not have our diagnostic capabilities and will often make unnecessary repairs.

When we do need to make repairs, we do them right every time. We always use high-quality parts and advanced equipment. You won't find junkyard parts at an AAMCO center. Our work is also backed by the strongest nationwide warranty in the industry, from our basic no-questions-asked nationwide warranty to our available iron-clad lifetime warranty.

Our exclusive techniques and resources have made AAMCO the most trusted name in transmission diagnostics and services for nearly 50 years. When your transmission is giving you trouble, come to AAMCO of San Antonio today.

Call (210) 647-1161

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