PIT5556A
Service Bulletin Details
Public Details for: PIT5556A
This preliminary information communicates an issue where the chassis wiring harness can chaff on the underbody of the vehicle causing a wide varied of issues,depending on which wire(s) is chaffed.Repair the affected wiring as needed
Models from 2017
| 2017 CADILLAC ESCALADE |
| 2017 CHEVROLET TAHOE |
| 2017 GMC YUKON |
Models from 2016
| 2016 CADILLAC ESCALADE |
| 2016 CHEVROLET TAHOE |
| 2016 GMC YUKON |
Models from 2015
| 2015 CADILLAC ESCALADE |
| 2015 CHEVROLET TAHOE |
| 2015 GMC YUKON |
Bulletin No.: PIT5556A Published date: 03/24/2020 Preliminary Information PIT5556A (Inspect Wiring Harness) Multiple Warning Lights / Messages / High Speed Lan / Chassis Expansion Bus / Intermittent Engine Stall at Stops / Service Power Steering / Service Stabilitrak / Service Park Assist / Service Traction Control / Service Suspension / Service Trailer Brake Message / Shift to Park / PRNDL May Not Display Gear Product Investigation Review Required Models Brand: Model: Model Years: VIN: from Engine: to Transmissions: Cadillac Escalade 2015 - 2017 All All All All Chevrolet Tahoe 2015 - 2017 All All All All GMC Yukon 2015 - 2017 All All All All Involved Region or Country Additional Options (RPO) Condition North America and N.A. Export Regions N/A Some customers may comment on any of the following warning messages and/or issues: - Intermittent Engine Stall at Stops SES MIL Service Power Steering/Reduced Power Steering Assist Message Service Stabilitrak Message Service Park Assist Message Service Traction Control Message Service Suspension System Message Service Trailer Brake Message Service Air Bag System Shift to Park Message PRNDL does not display current gear Blown Fuses - F23UA, F24UA, F25UA, F36UA, and/or F74UA When checking for DTC's the following may be set: C0045, C0050, C0544, C0575, C0580, C0585, C0590, C0615, C0620, C0625, C0630, C0660, C0696, C0710, C0711, C0712, C1112, C1113, C1114, C1115, C1116, C1117, C1118, C111B, C0880, U0073, U0077, U0100, U0101, U0102, U0104, U0121, U0126, U0128, U0131, U0139, U0140, U0151, U017E, U023A, U026A, U026A, U0401, U0415, U0422, U0428, U0452, U1505, U1556, U2099 These concerns will likely be intermittent and could be more noticeable during the following situations: when getting in/out of the vehicle, when loading items or passengers in the rear, while stepping on rear cargo area, rocking the vehicle, under moderate/hard braking, driving up/down an incline, or any maneuvers when body/frame flexing may occur. Cause If the source of the issue(s) are not found after performing normal SI diagnostics, they could be caused by a shorted chassis harness (3) where it passes between the underbody floor structure and frame cross member above the spare tire, as shown below. Depending on which wire(s) are damaged will determine which vehicle system(s) are affected: Communication Busses High Speed Lan/Chassis Expansion, Electronic Suspension Control, Trailer Brake Control, etc. The spare tire has been removed to access the area. 1. Spare Tire Hoist 2. Left Rear Frame Rail 3. Area of Shorted Harness Correction: Repair the affected wiring as needed. To provide more clearance between the wiring harness and the frame / body, attempt to reshape or flatten the harness in the affected area so it is more of an oval shape. Apply anti abrasion tape to help hold the shape, and, if needed, add additional protection to the harness to prevent any damage from reoccurring. Warranty Information For wiring repairs covered under warranty, please refer to latest version of bulletin 10-00-89005. Additional SI Keywords parking Version History Version Modi ed 2 12/13/2017 — Created on 03/24/2020 - Updated Condition © 2020 General Motors. All Rights Reserved.