EI08047 - Intermittent MIL/SES, DTC(s) P2138, P2120, P2122, P2123, P2125, P2127, P2128, P2138 with Reduced Engine Power
| Subject: | EI08047 -- Intermittent MIL/SES, DTC(s) P2138, P2120, P2122, P2123, P2125, P2127, P2128, P2138 with Reduced Engine Power (Engineering Information) |
| Models: | 2007 Cadillac Escalade, Escalade ESV |
| 2007 Chevrolet Suburban, Tahoe |
| 2007 GMC Yukon, Yukon Denali |
| Attention: | Proceed with this bulletin ONLY if the customer has commented about this concern AND the EI number is listed in GMVIS. If the customer has not commented about this condition or the EI does not show in GMVIS, disregard this bulletin and proceed with diagnostics found in published Service Information. THIS IS NOT A RECALL- refer to TSB 04-00-89-053B for more detail on the use of Engineering Information Bulletins. |
Condition
Important: If the customer did not bring their vehicle in for this concern, DO NOT proceed with this bulletin.
Some customers may comment on an intermittent MIL/SES light illuminated with a message center or an indicator that displays Reduced Engine Power.
Cause
GM Engineering is attempting to determine the root cause of the above condition. GM Engineering has a need to obtain information firsthand during diagnosis and BEFORE repair. As a result, this information will be used by engineering to "root cause" the customer's concern and develop/validate a field fix.
Instructions
Important: Without attempting any repairs, contact GM Engineering John Martin at 586-492-9238 (primary) or 586-854-9020 (secondary).
If the Engineer does not call you within one hour, proceed with diagnosis and repair procedure according to Service Information (SI).
GM Engineering may ask the technician to replace the accelerator pedal assembly and connector WITHOUT disconnecting/disturbing the connector.
Important: It is very important that the connector is not separated from the accelerator pedal assembly during the repair.
- Cut off about 76 mm (3 in) from the accelerator pedal position sensor connector (see figure above). DO NOT disconnect the connector.
- Refer to SI for removing and replacing the accelerator pedal.
- Splice the wires to the new connector using green splice sleeve, P/N 88988379, in Terminal Repair Kit J-38125.
Pin | Wire Color |
|---|---|
A | PU |
B | L-BU |
C | TN |
D | WH/BK |
E | D-BU |
F | BN |
The above picture shows what the pedal and connector should look like after it is off of the vehicle (without disconnecting the connector).
Important: To ensure minimal damage during shipping, be careful to wrap the accelerator pedal and connector in bubble wrap.
Parts Information
Part Number | Description | Qty |
|---|---|---|
15847349 | Pedal Assembly, Accelerator | 1 |
88988944 | Connector, Motor-Engine Cool Fan | 1 |
Warranty Information
For vehicles repaired under Engineering direction, use:
Labor Operation | Description | Labor Time |
|---|---|---|
J7718* | Pedal, Accelerator & Connector - Replace | 1.1 hrs |
* This labor operation number is for bulletin use only. This number will not be published in the Labor Time Guide. | ||
