Engine Data List Displays Incorrect Loop Status - keywords 2 after cal calibrate calibration closed cold DTC idle II light loop MIL no on open P0030 P0036 P0053 P0054 P0130 P0131 P0132 P0133 P0134
| Subject: | Engine Data List Displays Incorrect Loop Status |
| Models: | 2007 Chevrolet Colorado |
| 2007 GMC Canyon |
| with 2.9L Engine (VIN 9 - RPO LLV) |
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
Some technicians may notice that closed loop is incorrectly displayed in the Tech 2 Engine Data List as soon as the truck is started. Then, after the engine runs briefly, they may notice that open loop is incorrectly displayed for the remainder of that drive cycle.
Recommendation/Instructions:
If this concern is encountered, disregard the loop status parameter found in the Engine Data List. This issue has been reported to the Techline Customer Support Center. If this issue is corrected, this PI will be updated with additional details. In the meantime, use the HO2S Data List when it is necessary to view the correct loop status.
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.
