For 1990-2009 cars

# LNF Engine Control Module (ECM) Will Not Properly Communicate On-Board Diagnostic Misfire Counter Information to Non-Tech Service or Test Equipment

Subject: | LNF Engine Control Module (ECM) Will Not Properly Communicate On-Board Diagnostic Misfire Counter Information to Non-Tech 2® Service or Test Equipment

Models: | 2007 Pontiac Solstice GXP

| 2007 Saturn Sky Redline

| 2007 Opel GT (Export Only)

| 2007 Daewoo G2X (Export Only)

| with ECOTEC® 2.0L I-4 Turbocharged Engine (VIN X -- RPO LNF)

Some customers and/or General Motors dealership/Saturn retailers may have noticed that the vehicle's engine cannot be properly serviced or tested using non-Tech 2® (generic) service or test equipment.

When requested by non-Tech 2® (generic) service or test equipment, the cylinder specific misfire counter information displayed may not match the cylinder which has experienced misfire.

The following chart should be used to properly match cylinder specific misfire counts to the cylinder which has experienced misfire when using non-Tech 2® (generic) service or test equipment.

Cylinder Numbers for Misfire Counts Displayed On "Generic" Scan Tool | Actual Cylinder that has Experienced Misfire
--- | ---
1 | 1
2 | 3
3 | 4
4 | 2