Product Details

Transgo pulse dampener tool kit for the installation of part number 8L90-PDP-OS.

Product specifics:

• Brand: Transgo
• Part number: 8L90-PDP-TKC
• Covered models: 8L45, 8L45E, M5N, 8L90, 8L90E, M5U.
• Makes: GM, Cadillac, Chevrolet, GMC
• Year range: 2015-up
• Country of origin: USA
• Genuine Transgo brand: YES
• Transmission removal is not required.
• For the installation of: 8L90-PDP-OS

Even a little wear influences solenoid pressure to the controlling clutch regulator valves. Flare, harsh and erratic shifts all are a result of poor clutch control. A worn dampener bore must be corrected to provide a smooth solenoid signal to the clutch regulator it serves. The smoother the solenoid signal, the more consistent and cleaner the shifts and TCC will be.

The TransGo Pulse Dampener Tool Kit is a quick and easy solution to repair even the most worn GM 8L45 and 8L90 pulse dampener (accumulator) bores. Simply place the guide plate onto the valve body (refer to the instructions included with the kit), rotate until the two bolt holes lineup in the slots. Then use the washers included to protect the valve body and guide plate. Tighten down the bolts, remove the pin and it’s ready to ream!

Kit Includes:

• Guide plate
• (4) Washers
• (2) Bolts with butterfly nuts
• Pulse dampener pocket guide pin
• USA-made carbide reamer

These transmissions can be found in the following vehicles; however, you should double check your application.  It is common for similar vehicles to have multiple transmission options available from the factory.

Cadillac

• Escalade, EXT, ESV

Chevrolet

• Camaro
• Colorado 5.3L
• Corvette
• Express Van 2500
• Silverado Truck 1500, 2500
• Suburban
• Tahoe

GMC

• Canyon 5.3L
• Savana Van 2500
• Sierra Truck 1500, 2500
• Yukon
• Yukon XL 1500
• Yukon Denali

These transmissions are part of the Turbo Hydramatic or Hydra-Matic series and known by the following codes and part numbers: 8L45, 8L45E, M5N, 8L90, 8L90E, M5U.

This transmission master rebuild kit fits the following years: 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022.

Note on authenticity: Transgo has released a statement regarding the authenticity of some of the cheaper valve kits being sold on the internet. Not all are authentic. If it is too cheap to be true, it is probably not a true Transgo brand.