● Oakland Park, FL
Open Mon–Sat — (954) 535-9393
Call the shop
(954) 535-9393
Certified & Trusted Licensed & Insured Family-Owned Since 1983 ★★★★★ 4.6★ on Google · 229 ReviewsTrusted across South Florida
Oakland Park, FL · Since 1983

Free Transmission
Diagnostics.

Don’t pay to be told what’s wrong. We road-test, scan, and inspect your transmission for free — then give you a straight answer and an honest estimate.

What is free transmission diagnostics at Number One Transmissions?

Number One Transmissions offers free transmission diagnostics at our Oakland Park shop, serving South Florida since 1983. We road-test the vehicle, scan for codes, check fluid and line pressure, and inspect for leaks — then tell you exactly what’s wrong and what it will cost, with no obligation and no upsell. Call (954) 535-9393.

CK
Chris Koulouvaris — Owner Three generations of transmission specialists, hands-on since 1983. Reviewed & updated
ASE CertifiedA+ BBB Accredited40+ YearsLicensed & Insured

Expert free transmission diagnostics in South Florida

A correct diagnosis is the whole ballgame with a transmission. Guess wrong and you replace parts that were never the problem. That’s why we diagnose before we quote — and why the diagnosis is free. A slip, a shudder, a leak, or a check-engine light can each have several causes; we find the actual one.

Our diagnosis is a real process, not a code-reader in the parking lot: a road test to feel the symptom, a full scan of transmission and engine codes, a fluid and line-pressure check, and a visual inspection for leaks and damage. You leave knowing the real problem, the real fix, and the real cost — then you decide.

When to get a transmission diagnosis

If your vehicle is showing any of these, bring it in for a free diagnosis before a small problem becomes a big one:

Check-Engine Light

Transmission-related codes need a proper scan to read correctly — not a guess.

Slipping or Shuddering

Any slip, shudder, or hesitation is worth diagnosing before it damages the clutches.

Leaking Fluid

A red or brown puddle needs a source found fast — low fluid causes bigger failures.

Strange Noises

Whining, humming, or clunking that changes with gear or speed points to specific parts.

Shifting Problems

Hard, late, or missing shifts each have a cause — we pinpoint which.

Before You Buy

Getting a used car? We’ll inspect the transmission so you know what you’re buying.

Process

How we handle your transmission diagnostics

The same honest, four-step process on every job — a solution, not a guess:

Road Test

We drive the vehicle to feel exactly when and how the symptom happens.

Full Scan

We scan transmission and engine codes and read live data — not just a code number.

Fluid & Pressure

We check fluid level, condition, and line pressure, and inspect for leaks and damage.

Straight Answer

You get a clear diagnosis and an honest, written estimate — free, with no obligation.

Why South Florida trusts Number One Transmissions

A transmission is not a job for a general shop. Here’s what you get with a dedicated, family-owned specialist:

  • 40+ years, three generations — a true transmission shop, not a franchise.
  • ASE-certified, licensed & insured, A+ BBB accredited.
  • Free diagnostics & honest estimates — the price we quote is the price you pay.
  • 1-year / 12,000-mile warranty on every repair and rebuild.
  • 4.6★ across 229 Google reviews — nearly every one names owner Chris.
  • Veteran & first-responder discount.
Reviews
4.6★ Google · 229 Reviews

Trusted by South Florida drivers.

★★★★★

“You did a great job, Chris, of rebuilding my transmission. My 1999 Dodge Ram has 391,000 miles and going. Shifting firm and precise.”

Kyriakos Moforis · Google
★★★★★

“Great price and great service. The owner Chris built a great transmission and shipped it all the way to Northern California for my LS3 build.”

Thaddeus Wiltz · Google
★★★★★

“Chris is the real deal — he knows his stuff and gave me a very fair price. Honest and trustworthy.”

Brandon Michaels · Google
★★★★★

“Chris was amazing, very knowledgeable. Got me back on the road as promised with zero issues. A1 customer service.”

Michael Barnes · Google
★★★★★

“My transmission was a mess and they not only did a perfect job but they fixed it fast. Chris takes pride in his work.”

Juli Nickell · Google
Answers
Free Transmission Diagnostics FAQ

Questions, answered.

Are your transmission diagnostics really free?
Yes. We diagnose the problem and give you an honest estimate at no charge and with no obligation — so you can make the right call for your vehicle and budget.
How long does a diagnosis take?
Most diagnoses are done the same day. Call ahead or request a free quote and we’ll get you in.
What do you check?
A road test, a full scan of transmission and engine codes with live data, a fluid level and condition check, a line-pressure test, and a visual inspection for leaks and damage.
Do I need an appointment?
You can call ahead or just request a free quote and we’ll get you scheduled. We answer the phone directly at (954) 535-9393.
Will you tell me if it’s not the transmission?
Absolutely. If the symptom is something else — a motor mount, an axle, an engine issue — we’ll tell you straight. We’d rather earn your trust than sell you a repair you don’t need.
Free Quote

Tell us what it’s doing.

Free diagnosis, honest estimate, and a straight answer — from South Florida’s transmission specialists since 1983.