Service 4WD Indicator Illuminated DTC C0300 When Traveling At Wide Open Throttle In Fuel Cuttoff Mode - keywords 2hi auto awd intermittent mil wot
| Subject: | Service 4WD Indicator illuminated, DTC C0300 When Traveling at Wide Open Throttle in Fuel Cutoff Mode |
| Models: | 2007 Chevrolet Avalanche, Suburban, Tahoe |
| 2007 GMC Yukon, Yukon XL |
| Equipped with a 246EAU Transfer Case RPO NP8 |
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
Service 4WD indicator illuminated, DTC C0300 and erratic speed signal fluctuations in rear propshaft when operating in Fuel Cutoff mode, when traveling at Wide Open Throttle.
Recommendation/Instructions:
Under these operating conditions, the rear prop shaft speed sensor may become erratic causing fluctuations and setting DTC C0300. This operation should be considered normal, clear the code and advise customer that operating the vehicle in this manner may set the code and no further action to repair the vehicle should be considered.
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.
