Fuel System - Throttle Body Icing Condition: Overview

TECHNICAL

Bulletin No.: 08-06-04-009A

Date: March 12, 2008

Subject:
L91 Short Drive Cycle, Below Freezing Temperatures and High Humidity May Result In Throttle Body Icing Condition (Diagnosis and Report Concern First, Install PCV Valve Kit)

Models:
2004-2005 Chevrolet Aveo (U.S. Only)

with 1.6L 4-Cylinder Engine (VIN 6 - RPO L91)

Supercede:

This bulletin is being revised to remove reference to a service procedure video. Please Discard Corporate Bulletin Number 08-06-04-009 (Section 06 - Engine/Propulsion System).

Condition

Important:
This bulletin applies to vehicles sold and registered in the U.S. ONLY . Vehicles sold and registered in Canada should refer to Product Safety Recall 07047.

This condition is possible in 2004 - 2005 Chevrolet Aveo vehicles equipped with a 1.6L 4-cylinder (RPO L91 - VIN 6) engine and sold in US. A combination of short drive cycle below freezing temperatures and high humidity might result in an icing condition that could prevent the engine from starting cause the engine to stall after initial start or result in a high idle.

Correction

Follow SI procedures for the specific DTC and customer concern to accurately diagnose the condition. Do Not assume a no start or start/stall concern is related to this condition without visible throttle ice evidence or conclusive diagnostics. Work with the customer to complete the diagnostic check list and consult PQC for a Labor Operation Authorization prior to concluding that a kit installation is necessary. If PQC provides labor authorization then Dealers are to install the new Throttle Body PCV Valve kit by following the detailed service procedure. TO AVOID WARRANTY CHARGE BACK, DO NOT INSTALL A PCV VALVE KIT WITHOUT A CONCLUSIVE DIAGNOSIS, COMPLETION OF THE DIAGNOSTIC CHECK LIST AND A LABOR AUTHORIZATION FROM PQC.








Diagnostic Survey/Check List - All Questions Must be Answered Prior to Calling PQC For Labor Authorization Request.





Parts Information

Warranty Information





Important:
For claims to be paid, the Bulletin Checklist for PCV Valve Kit as shown above must be attached to the repair order.





For vehicles repaired under warranty, use the table.





Disclaimer