Transmission Control Module Replacement. GMC Truck Sierra Denali 2009

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2009 🢒 Sierra Denali 🢒 Transmission 🢒 Automatic Transmission - Allison 🢒 Transmission Control Module Replacement

Callout	Component Name
1	Transmission Control Module (TCM) Procedure Disconnect the TCM electrical connector. A new TCM requires programming. Refer to Control Module References . Tip Twisting or tilting of the transmission control module electrical connector while disconnecting may result in bent or misaligned electrical terminal pins.

Callout

Component Name

Transmission Control Module (TCM)

Procedure

Disconnect the TCM electrical connector.
A new TCM requires programming. Refer to Control Module References .

Tip
Twisting or tilting of the transmission control module electrical connector while disconnecting may result in bent or misaligned electrical terminal pins.