Bulletins


BulletinBulletin dateReplacement BulletinItem no.SummaryAdded
ENGINE AND ENGINE COOLING - ENGINE
12120212/12/200210002749Engine backfires with sufficient force to damage the engine air intake system and the air cleaner filter element. certain chevrolet and gmc medium duty trucks and school bus chassis. *tt09/12/2003
02060405210/01/200210000167Engine stall, no start, hard start condition. *tt02/13/2003
87612608/01/1998609579Oil weep or leak at gasket between upper and lower intake manifold. yd04/04/2000
866503A09/01/199886-65-03603825Subject regarding obd ii diagnostic trouble code (dtc) p1404 (reflash vcm). *yc03/08/1999
87652509/01/1998602824Comments of an extended engine cranking time during a hot restart in high ambient temperatures of 38 c (100 f). *yc01/13/1999
ENGINE AND ENGINE COOLING - ENGINE - GASOLINE
010601029A06/01/2002010601029634831Subject regarding higher than expected engine oil consumption. *tt10/09/2002
000601023A12/01/2001000601023628938Information used when diagnosing noise conditions such as engine rattle noise, spark knock at 2000 - 2500 rpm range, under a moderate to heavy load with a warmed up engine. *tt03/25/2002
99066D12/01/200199066C628925Some owners may experience a service engine soon light, misfire, rough idle orhard start due to a deposit build-up on the sequential central port fuel inujector (scpi) poppet valve(s). *tt03/25/2002
000604003A12/01/2001000604003628905Some customers may comment on rough idle after start up, especially after setting overnight. *tt03/22/2002
01060102912/01/2001628898Some customers may comment on higher than expected engine oil consumption. *tt03/21/2002
01060102812/01/2001628896Some vehicles may exhibit an engine knock noise on cold start. *tt03/21/2002
01060101908/01/2001624078Some customers may comment on excessive engine vibration at idle on various 1998 - 2001 medium duty models including chevrolet and gmc f models. *tt11/01/2001
00060401404/01/20006091427Some customers may comment on hard, no, or slow start, backfire or kickback during crank / start, grinding or unusual noises during crank, diagnostic trouble code p0338. *tt10/11/2000
99066B05/01/200099066A613602Some owners may experience a service engine soon light, misfire, rough idle or hard start. **mr07/25/2000
00060400201/01/2000609709Subject regarding a hard, no start or excessive gray or white smoke condition on start up after recent glow plug replacement. *tt04/06/2000
99060401605/01/1999606549Subject regarding engine surge while trailering. *tt08/27/1999
99060100304/01/1999605961Customer may comment on engine knocking noise. *tt08/04/1999
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM
86650307/01/1998615078Some vehicles may set a false obd ii with diagnostic trouble code p1404. *tt12/27/2000

Consumer Complaints


Fail datemilesoccurencesPurchase date
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM
04/15/200350200
 Misfire on all cyls did not pass emissions inspection test. factory bulletin says that water from defective checkvalve on vapor canistor will contaminate fuel rail causing emissions system failure. factory warranty is supossed to cover emission system to 70,000 mi.