Wiring Harness Installation

WARNING: This page is about a different car, the 2018 GMC Yukon XL, 2018 GMC Yukon, 2018 Chevrolet Tahoe, 2018 Cadillac Escalade ESV, and 2018 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Wiring Harness

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
1	Wiring Harness Connector Seal - O-Ring [2x] Procedure Use NEW O-ring seals.
2	Automatic Transmission Control Wiring Harness Retainer Procedure Install a NEW retainer.
3	Automatic Transmission Wiring Harness Procedure NOTE: Ensure the bulkhead connector is fully snapped into the case and seated flush. Install the wiring harness. Connect the Transmission Range Selector (TRS) connector. Ensure the TRS connector wire is routed under the retaining tab as shown (a).
4	Automatic Transmission Control Wiring Harness Clip Bracket Bolt [2x] Procedure Tighten bolts after speed sensor installation. One of the speed sensor wires needs to be routed under a retainer tab on this harness. Tighten 12 N.m (9 lb ft)
5	Automatic Transmission Control Wiring Harness Retainer Procedure Install a NEW retainer.