LMM, Clean Exhaust Filter Light Illuminated, MIL/SES Light Illuminated with DTCs P244B and/or P2463 Set (Perform All SI Diagnostics for DTCs Set, If NTF, Replace Air Filter)
| Subject: | LMM, Clean Exhaust Filter Light Illuminated, MIL/SES Light Illuminated with DTC(s) P244B and/or P2463 Set (Perform All SI Diagnostics for DTC(s) set, If NTF, Replace Air Filter) |
| Models: | 2007 Chevrolet Silverado |
| 2007 GMC Sierra |
| with 6.6L Duramax® Diesel Engine (VIN 6 - RPO LMM) |
Condition
Some customers may comment that the Clean Exhaust Filter light is illuminated and that the MIL/SES light illuminated immediately after. This may or may not have allowed the customer to get the vehicle into the regeneration window. Upon further investigation, technicians may find that the following DTC(s) were stored:
| • | P244B -- Diesel Particulate Filter Differential Pressure Too High |
| • | P2463 -- Diesel Particulate Filter Soot Level Accumulation |
Cause
The cause may be due to excessive soot production when pulling a trailer or loads in excess of 2,268 kg (5,000 lbs). The soot production may increase while pulling these loads over light or medium grades. The 2007 air filter may contribute to the soot accumulation at these operating conditions.
Correction
Technicians should perform all SI diagnostics for the following DTC(s):
| • | P244B -- Diesel Particulate Filter Differential Pressure Too High |
| • | P2463 -- Diesel Particulate Filter Soot Level Accumulation |
If no concern is found (NTF), then replace the 2007 air filter with P/N 25839611.
Parts Information
Part Number | Description | Qty |
|---|---|---|
25839611 | Air Filter | 1 |
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation | Description | Labor Time |
|---|---|---|
J5000 | Air Cleaner - Replace | Use Published Labor Operation Time |
