Reduced Power Message And Accelerator Pedal Position Code - keywords 5.3 6.0 6.2 6.6 accel acceleration APP DIC DTC engine LC9 LMG LY5 LY6 L92 mode no P2120 P2122 P2123 P2125 P2127 P2128 P2138 RPM
| Subject: | Reduced Power Message and Accelerator Pedal Position Code |
| Models: | 2007-2008 Cadillac Escalade |
| 2007-2008 Chevrolet Avalanche, Silverado, Suburban, Tahoe |
| 2007-2008 GMC Sierra, Yukon, Yukon Denali |
This PI was superseded to update models and engines. Please discard PIP3783A.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
Condition/Concern:
The customer concern may be a SES light on with a reduced power message.
Recommendation/Instructions:
Complete the current SI diagnostics for any symptoms or DTCs found. If the vehicle was brought in for a reduced power message and DTCs P2120, P2122, P2123, P2125, P2127, P2128, or P2138 were found, inspect connectors C109 and C205. Connector C109 is located on the left side of the engine compartment below the underhood fuse block. Connector C205 is located under the Upper Instrument Trim Panel. To access connector C205 use the SI procedures for Instrument Panel Upper Trim Panel with Windshield Defroster Nozzle Grille Replacement.
Inspect all terminal and pin fits at connectors C109 and C205. Make sure the connectors are properly seated and locked. Make necessary wiring repairs following SI procedures.
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.
