8-Speed Automatic Transmission | Chevy Silverado and GMC Sierra Forum

Sticky New 8-Speed Automatic Transmission Section

0

2K

Vehicle briefly stops accelerating for a couple seconds at low speeds.

16

536

8l90 transmission with a transmission fluid cooler exchanger 2019 GMC Sierra

0

135

by Gr102

8L90 8 speed transmission thermostat TSB as well as Sure-cool thermostat problems?

10

566

Torque Converter Shudder Returns 2016 Silverado 1500 High Country 5.3L 8-speed 8L90

2

337

Hello,owner of a 2018 Chevrolet Silverado

13

485

Cold Shifting Problem

3

258

by Z15

Transmission overheat, looking for advice...

2

23

1K

by Injun

Had a torque converter shudder last week

5

388

by Z15

8L90 upgrades

4

650

by ‘17GraphiteSilverado

No Trans Stick

16

672

New GM TSB for Thermal Bypass Valve

2

29

26K

I found an extra bolt inside the pan

13

747

2022 Sierra 2.7 turbo 8-speed transmission operating temp

6

1K

by Leveled17yeti

Service 4WD, but no code

3

323

by davester3500

Transmission slipping

2

486

2017 Silverado 8 speed transmission issues (Trans Fluid Flush or Not)

5

2K

2020 Silverado Towing issues

8

902

Weird Downhill transmission slip? Or?

7

635

2nd gear if a tough shift

3

667

8 speed trans w/ lift kit and bigger tires

12

2K

by Leveled17yeti

2018 Silverado 6.2L 8L90 8spd trans questions

1

1K

Possible transmission issue with larger tires?

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–

N/A

Slow speed hard shifting

5

2K

by espanajetmech

Driveline vibration

0

622

by ‘17GraphiteSilverado

8 SPD issues and the valve body

11

4K

by Sam L.

hard shifting at part throttle

2

833

8 speed transmission fix

1

2K

by NealC

Trifecta Tune? 2017 Sierra 6.2L 8sp Trans

2

26

9K

8L90E replacement ro rebuild

6

2K

by Bradley21sanders

Bad Torque Converter

5

2K

8L90 Service

2

1K