| Subject: | Modification of Fuel Pipe Bracket During Fuel Rail Replacement |
| Models: | 2003 Chevrolet Kodiak C4500/C5500 Series Models |
| 2003 GMC Topkick C4500/C5500 Series Models |
| with 6.6L Duramax™ Diesel Engine (VIN 1 -- RPO LB7) |
When replacing the left fuel rail on 2003 C4500/C5500 series Chevrolet
Kodiak or GMC Topkick trucks, with engines built prior to June 5, 2002,
the fuel pipe bracket may interfere with the new fuel rail at the hold down
bolt area. A modification to the fuel rail was made during the 2003 model
year that requires a contoured fuel pipe bracket. If the left fuel rail
is replaced on vehicles with engines built before June 5, 2002, modify
the fuel pipe bracket as illustrated for proper fit to the fuel rail.
