πŸ”§ FREE Computer Diagnostic (Reg. $89) β€” Call: (312) 555-0180

M9HA Transmission Repair & Rebuild β€” Chicago

Honda M9HA 9-Speed Automatic Transaxle Β· Honda / Acura Β· Expert rebuild service since 1987. Lifetime warranty. Free diagnostic.

πŸ›‘οΈ Lifetime Warranty on Rebuilds
⭐ 4.9 Stars · 847 Reviews
πŸ“… Since 1987
πŸ”§ ASE Certified
πŸš› Free Towing within 15 Miles
Type M9Ha Transmission Repair β€” Chicago Transmission | Chicago IL
Expert Type M9Ha transmission service at Chicago Transmission since 1987.

Vehicle Applications

2017–2022 Honda CR-V (2.4L non-turbo), 2019–2023 Acura RDX, 2019–2022 Acura CDX

Technical Specifications

Configuration9-speed automatic FWD transaxle
Gear Ratios1st 5.25:1 Β· 2nd 3.03:1 Β· 3rd 1.97:1 Β· 4th 1.43:1 Β· 5th 1.11:1 Β· 6th 0.86:1 Β· 7th 0.71:1 Β· 8th 0.60:1 Β· 9th 0.49:1 Β· Rev 4.15:1
Fluid TypeHonda ATF-DW1
Fluid Capacity8.8 qts total, 4.2 qts service refill

Top 3 Failure Points

1

Early Shift Quality Complaints (Software)

Early M9HA units had harsh, unpredictable shift behavior addressed through multiple Honda PCM/TCM software updates.

Symptoms: Abrupt 1-2 shift, hunting between gears, hesitation when selecting Drive β€” check for pending TSBs/updates first

2

9th Gear Clutch Wear

The overdrive 9th gear clutch pack is lightly loaded but can wear prematurely if fluid is degraded. Most common on high-mileage highway vehicles.

Symptoms: Slip at freeway cruise speed, DTC P0879, hunting between 8th and 9th gear

3

Torque Converter Clutch Shudder

TCC shudder at light cruise in 7th–9th gears is reported on higher-mileage M9HA units.

Symptoms: Light vibration at 55–75 mph, DTC P0740, shudder reduces with fresh ATF-DW1

Rebuild Process

M9HA rebuild replaces all nine-speed clutch packs, torque converter, and all solenoids. PCM/TCM is updated to latest Honda calibration before delivery. ATF-DW1 is used throughout. All seals and bearings renewed.

What's Replaced in Every Rebuild

  • All clutch packs (9-speed full set)
  • Torque converter with upgraded TCC friction
  • Shift solenoid set
  • All seals and thrust washers
  • PCM/TCM calibration update

Maintenance Tips

Honda ATF-DW1 every 30,000 miles. If you experience early shift quality issues, check for Honda TSB updates before authorizing major repairs β€” many early shift complaints are resolved with a free software update.

FAQ

Common Questions About the M9HA

2017–2022 Honda CR-V (non-turbo), 2019–2023 Acura RDX, and 2019–2022 Acura CDX.

The M9HA is generally reliable when fluid is maintained, but early software issues and TCC shudder on high-mileage units are common complaints.

Not necessarily. Check for Honda/Acura TSBs first β€” many harsh shift complaints on the M9HA are resolved with a free PCM calibration update.

A full rebuild ranges $2,100–$2,700 at Chicago Transmission.

Honda ATF-DW1.

Need M9HA Transmission Service?

Free diagnostic, written estimate, lifetime warranty. Chicago's M9HA rebuild specialists since 1987.

Transmission Parts And Components β€” Chicago Transmission | Chicago IL
Transmission components laid out for rebuild and inspection β€” we stock parts for all makes and models.
Car On Lift For Transmission Service β€” Chicago Transmission | Chicago IL
A customer vehicle raised on our lift for thorough transmission inspection at Chicago Transmission.
ASE Certified Transmission Mechanic β€” Chicago Transmission | Chicago IL
Our ASE-certified technicians bring decades of hands-on transmission experience to every job.
πŸ“ž (312) 555-0180 Free Diagnostic