Rainier AWD L6-4.2L (2007)
PROM - Programmable Read Only Memory: Customer Interest
Engine Controls - A/C Not Cold/MIL ON/DTC P0116 Set
Bulletin No.: 06-01-39-012
Date: November 09, 2006
TECHNICAL
Subject:
Air Conditioning Not Cold, Malfunction Indicator Lamp On, DTC P0116 (Reprogram PCM)
Models:
2007 Buick Rainier
2007 Chevrolet TrailBlazer
2007 GMC Envoy Models
2007 Saab 9-7X
with 4.2L Engine (VIN S - RPO LL8)
Condition
Some customers may comment that the Air Conditioning (A/C) does not get cold enough. Others may comment that the Malfunction Indicator Lamp
(MIL) is on.
Technicians may find that Diagnostic Trouble Code (DTC) P0116 (Engine Coolant Temperature Sensor Performance) has been set in the Powertrain
Control Module (PCM).
Cause
This condition may be caused by the software in the PCM that allows the P0116 to set. While the P0116 is active, the PCM will not allow the A/C
compressor to engage.
Correction
Technicians are to reprogram the PCM in vehicles built prior to the VIN breakpoints shown.
The updated PCM calibrations were released to dealerships that use the TIS2web application on August 23, 2006. They are contained in the new
calibration entitled "New software with diagnostic enhancements for DTC P0483". The TIS satellite data update version 9.0 was broadcast to the field
on September 3, 2006. For dealerships that use DVDs, the update will be included with version 9.0 that was mailed on September 13, 2006. As always,
make sure your Tech 2(R) is updated with the latest software version. Refer to the Engine and Powertrain Control Module Programming and Setup
procedures in SI for more information.
Warranty Information (excluding Saab U.S. Models)
