GM Service Manual Online
For 1990-2009 cars only

Coolant Leak at Rear of Vehicle (Install Auxiliary Heater Inlet and Outlet Hose Quick Connector Service Kit)

Subject: Coolant Leak at Rear of Vehicle (Install Auxiliary Heater Inlet and Outlet Hose Quick Connector Service Kit)

Models:2005-2007 Cadillac Escalade, Escalade ESV
2005-2007 Chevrolet Suburban, Tahoe
2005-2007 GMC Yukon Models
with Auxiliary Heater (RPO C36)



Condition

Some customers may comment on a coolant leak at the rear of the vehicle.

Cause

This condition may be due to the auxiliary heater hose quick connection leaking or the retaining clip is broken.

Correction


Object Number: 1887996  Size: SH

Technicians are to install an auxiliary heater inlet and outlet quick connector service kit instead of replacing the entire auxiliary heater hose line set. The components of the service kit are shown in the illustration above. The kit consists of an instruction sheet, retaining clip (1), second O-ring (2), mid-spacer (3), and first O-ring (4). Refer to the Auxiliary Heater Inlet and Outlet Hose Connector Retainer and Seal Replacement procedure in SI for more information on how to install this service kit (Document ID# 1887838).

Parts Information

Part Number

Description

Qty

19130031

Retainer Kit, Auxiliary Heater Inlet & Outlet Hose Connector

1 per hose

Warranty Information

For vehicles repaired under warranty, use:

Labor Operation

Description

Labor Time

D2742

Fitting, Quick Connect - Replace

Use Published Labor Operation Time