Subject: | GM Performance Parts Stage 1 or 2 Kits Only - SES Light with a P0171 DTC |
Models: | 2005-2006 Chevrolet Cobalt SS |
2004-2006 Saturn Ion Redline |
with 2.0L Engine (VIN P - RPO LSJ) |
and GM Performance Parts Stage 1/2 Kit |
This PI was superseded to remove the 2007 model year. please discard PIP3868A.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
On rare occasions, an intermittent SES light may be encountered with a DTC P0171 and NO engine performance concerns.
Important: This PI only applies to vehicles that have a GM Performance Parts Stage 1 or Stage 2 Kit installed. For vehicles without a GM Performance Parts Stage 1 or Stage 2 Kit, see bulletin 06-06-04-033.
If the SI diagnostics do not isolate a cause for this concern, reprogram the ECM with TIS Version 9.0 or later, which contains ECM calibration updates to address this concern.
Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.