TSB: 2005 Silverado/Sierra (2500): 030000 SERVICE BRAKES, HYDRAULIC

[07FX4Chick]

[FONT=&quot]Mfg Service Bulletin #: [/FONT][FONT=&quot]612[/FONT][FONT=&quot] [/FONT]
[FONT=&quot] NHTSA Item #: [/FONT][FONT=&quot]10015784[/FONT][FONT=&quot]
Make: GM
Model: SILVERADO/SIERRA 2500[/FONT]
[FONT=&quot]Model Year: [/FONT][FONT=&quot]2005[/FONT][FONT=&quot]

Issue: SERVICE ENGINE SOON LIGHT ILLUMINATED. DIAGNOSTIC TROUBLE CODE (DTC) P0171 AND/OR P0174 (LEAN FUEL TRIM) MAY BE SET. MASTER CYLINDER O-RING DAMAGED.[/FONT][FONT=&quot][/FONT]