117 Regency Dr., Wylie, TX 75098 Mon–Fri 8AM–6PM · Sat 8AM–2PM
Now accepting same-day drop-offs citylineauto601@gmail.com
Cityline
Automotive
Home
AboutWarrantyPricingReviewsAreasContact FAQ Car Care Tips Call 972-442-0099
HoursMon–Fri 8AM–6PM
Sat 8AM–2PM · Sun closed
Home/Services/Transmission
Service · Drivetrain

Transmission Service & Replacement

Slipping, harsh shifts, delayed engagement or a transmission warning light — diagnosed honestly, because plenty of “transmission failures” aren’t.

2yr / 24k warrantyFree multipoint inspectionWylie, TX
The approach

“You need a transmission” is one of the most expensive sentences in this industry, and it gets said far too casually. A solenoid, a speed sensor, a wiring fault, low or burnt fluid, or even an engine misfire can all produce symptoms that feel exactly like a failing transmission.

So we check those first. Fluid condition and level, stored and pending codes, live data during a road test, and shift-pressure behavior. If it really is internal, we’ll show you why — and if it isn’t, you’ll pay for the sensor instead of the transmission.

What this service includes

  • Transmission fluid and filter service to manufacturer specification
  • Road-test diagnosis with live data on shift timing and pressures
  • Shift solenoid, valve body and sensor replacement
  • Torque converter diagnosis and replacement
  • Axle, CV joint, driveshaft and differential service
  • Clutch replacement on manual transmissions
  • Full rebuild or replacement when internal damage is confirmed
Every transmission job at Cityline includes a complimentary multipoint inspection and is covered by our 2-year / 24,000-mile warranty on most repairs.
Warning signs

When to bring it in.

Any one of these is worth a phone call. Most of them are cheaper to fix now than in three months.

01

Slipping or flaring between gears

Engine RPM rises but the car doesn’t accelerate the way it should.

02

Harsh or delayed engagement

A clunk into drive or reverse, or a pause of a second or more before the car moves.

03

Shuddering at steady speed

Often a torque converter clutch issue — frequently fixable without a rebuild if caught early.

04

Transmission or check engine warning light

Stored codes often point directly at a solenoid or sensor rather than internal failure.

05

Burnt-smelling or dark fluid

Healthy fluid is bright and clean. Dark and burnt means heat damage is already happening.

06

Whining or humming that changes with speed

Can be transmission, but can also be a bearing or differential. Worth isolating before spending.

How we work

Diagnose first. Quote second.

1

Fluid and code check

We start with condition, level and stored data — the cheapest information available.

2

Road test with live data

We watch shift points, pressures and slip in real conditions, not just in the bay.

3

Honest recommendation

Sensor, solenoid, service, rebuild or replacement — with the reasoning laid out.

4

Repair and warranty

Verified on a road test, then covered by our 2-year / 24,000-mile warranty.

Questions

Transmission, answered.

Often, no. We’ve had plenty of vehicles come in after being quoted a full replacement elsewhere that needed a solenoid, a sensor or a proper fluid service. We’ll test before we quote.

It depends on the vehicle and how you drive — towing and Texas heat both shorten the interval. Many manufacturers call for 60,000 to 100,000 miles; we’ll check your specific schedule and the fluid’s actual condition.

Not automatically, but it depends on condition. We’ll inspect the fluid and tell you honestly whether a service helps or whether you’re better off saving toward a rebuild.

Both, depending on the vehicle, the failure and the math. We’ll walk you through the cost and expected life of each option before you decide.

Related

Other things we handle in-house.

Ready when you are.

Tell us what your vehicle is doing. We’ll tell you what it actually needs — and what it doesn’t.

Call Now Book Service