Heater - Insufficient Heat Reaching Drivers Area: Overview

File In Section: 1 - HVAC

Bulletin No.: 66-11-O4A

Date: September, 1997

Subject:
Insufficient Heat to Driver's Side and Cold Air from Left Kick Panel Area
(Install and Modify Ducts and Seal Body Openings)

Models:
1996-97 Chevrolet M/L Models - Built Prior to VIN Breakpoint - VB110256
1996-97 GMC M/L Models - Built Prior to VIN Breakpoint - VB503618

This bulletin is being revised to correct the VIN Breakpoints, revise the Service Procedure and change Figure 2. Please discard Corporate Bulletin Number 66-11-04 (Section 1 - HVAC).

Condition

An owner may comment that insufficient heat is reaching the driver's area from the heater duct and that a draft of cold air can be felt coming from the left kick panel.

Correction

Install seals behind the left kick panel to block the flow of cold outside air around this area and install additional ducts and modify an existing duct to increase warm air flow to the driver's side from the heater duct.

Parts Information

P/N Description QTY

15152423 Duct Service Kit 1

(Kit contains all P/N's listed in Service Procedure) Parts are currently available from GMSPO.

Warranty Information

For vehicles repaired under warranty, use:

Labor
Operation Description Labor Time

D1410 Modify and Install 0.5 hr
Heater Duct & Seal Plus 0.5
Behind Left Kick Panel other hr

Important:
Labor operation is coded to base vehicle coverage in the warranty system.