Service Engine Soon Lamp Illuminated with Engine Cooling Fan System Performance DTC P0483 Currently Set or Stored in History (Reprogram PCM)
| Subject: | Service Engine Soon Lamp Illuminated with Engine Cooling Fan System Performance DTC P0483 Currently Set or Stored in History (Reprogram PCM) |
| Models: | 2007 Buick Rainier |
| 2007 Chevrolet TrailBlazer Models |
| 2007 GMC Envoy Models |
| 2007 Saab 9-7X |
| with 4.2L, 5.3L or 6.0L Engine (VINs S, M, H -- RPOs LL8, LH6, LS2) |
This bulletin is being revised to remove the Isuzu Ascender model from the VIN breakpoint table. Please discard Corporate Bulletin Number 06-06-02-010A (Section 06 -- Engine/Propulsion System).
Condition
Some customers may comment on a Service Engine Soon (SES) lamp illuminated. Technicians may find an Engine Cooling Fan System Performance Diagnostic Trouble Code (DTC) P0483 currently set or stored in history.
Cause
This condition may be caused by more sensitive Powertrain Control Module (PCM) diagnostics and a reduced fan flare clutch for 2007 that have resulted in a system that is more sensitive to setting the fan performance DTC, P0483, while driving at low speed after a start-up with the Air Conditioning (A/C) on.
Correction
Technicians are to update the Powertrain Control Module (PCM) software in vehicles built prior to the following VIN breakpoints:
Vehicle | Engine | VIN of First Vehicle Built With Updated PCM |
|---|---|---|
Buick Rainier | 4.2L (VIN S -- RPO LL8) | 5GADT13S572133252 |
Buick Rainier | 5.3L (VIN M -- RPO LH6) | 5GAET13M672131189 |
Chevrolet TrailBlazer | 4.2L (VIN S -- RPO LL8) | 1GNDS13S672133236 |
Chevrolet TrailBlazer | 5.3L (VIN M -- RPO LH6) | 1GNET13M972130883 |
Chevrolet TrailBlazer SS | 6.0L (VIN H -- RPO LS2) | 1GNET13HX72130832 |
GMC Envoy | 4.2L (VIN S -- RPO LL8) | 1GKDT13S772133238 |
GMC Envoy | 5.3L (VIN M -- RPO LH6) | 1GKET63M672130804 |
Saab 9-7X | 4.2L (VIN S -- RPO LL8) | 5S3ET13S572800883 |
Saab 9-7X | 5.3L (VIN M -- RPO LH6) | 5S3ET13M572800870 |
The updated PCM calibrations were released to dealerships that use the TIS2web application on August 23, 2006. The TIS satellite data update version 9.0 will be broadcast to the field on September 3, 2006. For dealerships that use DVDs, the update will be included with version 9.0 that will be mailed on September 13, 2006. As always make sure your Tech 2® 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)
For vehicles repaired under warranty, use:
Labor Operation | Description | Labor Time |
|---|---|---|
J6354 | Powertrain Control Module - Engine Reprogramming with SPS | Use Published Labor Operation Time |
Warranty Information (Saab U.S. Models)
For vehicles repaired under warranty, use:
Labor Operation | Description | Failed Object | Fault/Reason Code | Location Code | Warranty Type | Repair/Action Code | Labor Time |
|---|---|---|---|---|---|---|---|
2481001 | Powertrain Control Module - Engine Reprogramming with SPS | 24810 | 67 | 0 | 01 | 05 | Use Published Labor Operation Time |
