GM 8L45 Archives - Transmission Digest
How to fix GM 8L45/8L90 no-move and no-pressure conditions

By now you may have heard of, or even experienced, a GM 8L45 or 8L90 transmission with a no-move or no-pressure condition. Conditions of no movement or no pressure after repair have plagued this unit since its inception. Here’s what you can do about them. Condition 1: No movement after fast learn or programming If

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Raybestos adds new clutches for GM 8L45

Raybestos Powertrain has introduced two new clutch packs for the GM 8L45. The first is a GPZ friction clutch pack (part no. RGPZ-285) for model years 2016 and on of the 8L45. This GPZ complete unit Clutch Pack module features (4) C1 Clutch, (3) C2 Clutch, (5) C3 Clutch, (4) C4 Clutch, (4) C5 Clutch

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Transtar highlights cooler flow bypass kit for GM, Allison

Transtar highlights the TransGo cooler flow bypass kit for GM 6L80, 6L90, 8L45 and 8L90 models as well as Allison 1000 transmissions. Years covered range from 2014 to 2022. According to the company, features of this kit include: Provides all-time cooler flow regardless of temperature; Prevents overheating; Reduces transmission fluid temperature; Eliminates thermostatic assembly; Allows