For 1990-2009 cars only
Rough Engine Idle when Hot (Reprogram PCM)
| Subject: | Rough Engine Idle when Hot (Reprogram PCM) |
| Models: | 2004 Chevrolet Malibu |
| with 3.5L LX9 (VIN 8 - RPO LX9) |
Condition
Some customers may comment on a rough or unsteady idle when the vehicle is at full warmed to operating temperature.
Correction
New calibrations have been released to address this concern. Reprogram the PCM with the appropriate calibration or later as shown below.
Part Number | Axle Ratio | Other |
|---|---|---|
12592927 | 3.29:1 (RPO FR9) | - |
12593042 | 3.05:1 (RPO F83) | - |
12593041 | 3.05:1 (RPO F83) | Mexican Noise Control (RPO VPM) |
The new calibration has been released beginning with TIS version 4.0 for 2004 that was available in April 2004. As always, make sure your TECH2® is updated with the latest software version.
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation | Description | Labor Time |
|---|---|---|
J6354 | Module, Engine Control - Reprogram | 0.4 hr |
