01Urgent
Transmission Warning Light
Dedicated TCM warning, gear icon flashing, or check engine light with a transmission code. The car is already telling you what is wrong.
Transmission diagnostic.
Before we recommend a single part we figure out what is actually wrong. Scan tool, live data stream, fluid condition, road test, and a look underneath. Most diagnoses take under an hour. You leave with a clear answer and an honest quote, not a sales pitch.
Six reasons to bring it in this week.
If any of these match your daily drive, get a diagnosis before the symptom becomes a failure. Transmission problems do not improve on their own.
02Urgent
Slipping or Hesitating
RPMs climb without speed, long delay shifting into Drive or Reverse, gear searching on hills. Internal pressure or solenoid issue.
03Soon
Hard, Harsh, or Erratic Shifts
Shifts that slam, hunt, or feel inconsistent. Often a valve body, solenoid, or worn-clutch problem caught early.
04Urgent
Burning Smell or Dark Fluid
If the dipstick shows brown, black, or burnt-smelling fluid, the transmission is running hot and damaging itself. Stop driving and bring it in.
05Urgent
Red or Brown Puddle
Transmission fluid leak on the driveway. Even a slow leak runs the transmission low on fluid, which causes pressure loss and slipping.
06
Pre-Purchase Check
Buying a used car? A transmission diagnostic and fluid inspection takes an hour and can save you thousands. We do these regularly.
What's in a real transmission diagnostic.
Anyone can plug in a code reader and call it a diagnosis. Here is the actual process, which is the difference between guessing and knowing.
OBD-II scan for all stored and pending codes
Not just generic powertrain codes. We pull manufacturer-specific transmission codes (P07XX, U-codes from the TCM, body codes that affect shift logic) and decode what each one actually means for your vehicle.
Live data stream review
Watching the transmission control module in real time: line pressure, solenoid duty cycle, turbine speed vs output speed, fluid temp, shift commands vs actual shifts. This is where intermittent problems show themselves.
Fluid level and condition check
Color, smell, viscosity, and any debris on the dipstick or under the magnet. Pink and clean is healthy. Brown is overdue. Black, burnt, or full of clutch material tells us the transmission is already damaged inside.
Road test under real conditions
We replicate the symptom you described. Cold start, takeoff shifts, kickdown, highway lockup, deceleration downshifts. A test drive often reveals more than the scan tool, especially for shudder, harsh shifts, or intermittent slipping.
External visual inspection
On the lift: pan condition, leaks at pan gasket and cooler lines, electrical connectors at the case, mount condition, axle seals. Many "transmission" problems turn out to be motor mounts, axles, or wiring.
Honest verdict and quote
We tell you what we found, what your options are, and what each one costs before we touch a wrench. If the fix is a single solenoid, that is what we quote. If the right answer is a full replacement, you hear that with reasoning, not a sales pitch.
Some failures require removing the transmission to see internally. We do not do internal rebuilds in-house, but we will tell you exactly when a teardown is needed and refer you to a trusted transmission specialist for that work.
Got a specific symptom?
Match what your car is doing to the right next read. Each page covers the symptom and the repair path.
01
Transmission Slipping
RPMs flare, delayed engagement, gear jumping, shudder at cruise. Causes from cheap to expensive.
02
Transmission Fluid Change & Flush
When to change, when to flush, when to do neither. Service intervals for ATF, CVT, DCT, and European specs.
03
CVT Transmission Service
CVT diagnostics are different. Different codes, different fluid, different rules. Honda, Nissan, Subaru, Toyota.
04
All Transmission Repair
Full list of warning signs, what we fix in-house, and what we refer out. Start here for the overview.
Frequently asked.
Call (336) 370-6710 for current pricing. A basic scan-and-inspect is often complimentary when paired with the eventual repair. More involved diagnoses (live data, pressure testing, extended road test) may carry a diagnostic fee that gets applied to the repair if you proceed.
Most diagnoses take 45 minutes to an hour, including scan tool, fluid check, and road test. More complex intermittent problems may need extended testing or fluid analysis, which we will explain up front.
P0700 is a general code that tells you the transmission control module (TCM) has set its own code. By itself it means nothing useful. The TCM has a separate code (often a P0741, P0750, P0731, etc.) that tells us what the actual problem is. We pull both codes during diagnosis.
P0741 means the torque converter clutch is not engaging properly. Common causes: low or contaminated fluid, failed lockup solenoid, worn lockup clutch in the torque converter, or a TCM software issue. We test each before recommending parts.
Most of the time, yes. Scan tool data, fluid condition, pressure testing, and road test isolate the problem in 80 to 90 percent of cases. Internal damage (worn clutch packs, broken planetary gears) sometimes requires a teardown to confirm, which is where a transmission specialist comes in.
Sometimes. Cheap code readers show generic OBD-II codes but often miss the manufacturer-specific transmission codes that point at the actual problem. We use professional scan tools with manufacturer-level access for Ford, GM, Toyota, Honda, Nissan, Subaru, Hyundai, Kia, BMW, and more.
Maybe. Plenty of transmission problems trigger the check engine light because the TCM and ECM talk to each other. We scan, identify the code, and tell you whether it is transmission, engine, or sensor. No guessing.
Yes, always. A pre-purchase transmission inspection (scan, fluid condition, road test) takes about an hour and is one of the highest-ROI checks you can do on a used vehicle. We do these regularly for buyers shopping locally.
We refer you to a transmission specialist we trust for internal rebuild work. We do not pretend to do what we do not do, and we do not mark up a referral. You get the right shop for the actual job.
Need a real diagnosis?
Bring it in for a full transmission diagnostic. You leave with a clear answer and an honest quote, not a sales pitch.
1605 W Gate City Blvd
Greensboro, NC 27403
Mon–Fri · 9 AM – 6 PM
Sat · 9 AM – 3 PM
(336) 370-6710
Walk-ins welcome