Bulletins


BulletinBulletin dateReplacement BulletinItem no.SummaryAdded
ENGINE AND ENGINE COOLING
04060300202/01/200410012703Diagnostic information for intermittent vehicle no crank dead battery. *eh03/10/2005
ENGINE AND ENGINE COOLING - ENGINE
05060407712/01/200510019582Lack of power lu3 engine) at high ambient temperatures only (if necessary, reprogram pcm with new service calibration).*ak03/30/2006
3342A10018620Engine hot soak hesitation low power. *tt01/09/2006
3048A10017154Supplement to 03-06-01-024b 4.3l lu3 l35 timing chain tensioner. rattle-type noise coming from the engine at approximately 1800 to 2200 rpms. *tt10/26/2005
00700A01/01/200400700B100075844.3l l35 engine wide open throttle diagnostic trouble code (dtc) p0335, p0336, p0339. *tt *mj07/01/2004
01485B01/01/200401485C10007272Timing chain tensioner breakpoints for service kit or production fix. rattle-type noise coming from the engine at approximately 1800 to 2200 rpms. 4.3l lu3 l35 engine. *tt06/09/2004
0172701/01/2004100063634.3 l35 lu3 rattle or buzz noise from engine. sit bulletin 1457619. *tt04/29/2004
0148501/01/200410005500Timing chain tensioner breakpoints for service kit or production fix. rattle-type noise coming from the engine at approximately 1800 to 2200 rpms. 4.3l lu3 l35 engine. *tt03/01/2004
01485A01/01/200410005445Timing chain tensioner breakpoints for service kit or production fix for vehicle exhibiting rattle-type noise coming from the engine at approximately 1800 to 2200 rpms. sit bulletin 1408407. *tt02/27/2004
03060403303/01/2004030604033A10002860Revised diagnostic trouble code p0336. *tt update. to include 2004 isuzu nqr commercial models. *tt09/29/2003
03060403003/01/2007030604030C10002166Multiple driveability symptoms of long or hard starts, chuggle, rough idle and light or intermittent misfire due to clogged fuel injectors. *tt08/14/2003
ENGINE AND ENGINE COOLING - ENGINE - GASOLINE - BELTS AND ASSOCIATED PULLEYS
304801/01/200410009391Timing chain tensioner breakpoints for service kit or production kit. supplement to 03-06-01-024b. *tt09/27/2004
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM - EMISSION CONTROL
05060402103/01/200510015005Revised inspection/maintenance (i/m) evaporative emission (evap) system set procedure. *tt05/13/2005

Consumer Complaints


Fail datemilesoccurencesPurchase date
ENGINE AND ENGINE COOLING
07/06/200438000705/21/2002
 I was stuck in traffic on an interstate. without warning my vehicle shut off. i restarted it a few moment later and continued down the road. approx 30 min later while traveling 70 mph, it suddenly stopped again. during the next 2 hours, it quit 5 more times, usually at stop signals. i took the vehicle to the dealer who had it for two days and couldn't find anything wrong. *ak
ENGINE AND ENGINE COOLING - COOLING SYSTEM
02/15/2009490001
 2004 chevy blazer 4.3 v6 vehicle 49,000 miles the intake manifold gasket leaking .numerous complaints online they used cheap plastic gasket in combination with dexcool fluid some say result in meltdown of fuel line gasket resulting in fire. *tr
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM
12/08/2003150011/24/2003
 Vibration and droning noise started 1 1/2 weeks (approximately december 9 or 10, 2003, after purchase on 11/24/2003. levels of vibrations range from light to medium to heavy; levels of droning noise range from light to medium to heavy. 1. 1st repair visit--1/17/04 for vibration and droning--(droning was not mentioned on service order;when leaving the dealer, the vibration and droning noise worse than when it was brought in. service order had 1465 excessive exhaust vibration l2004 .4 to align exhaust system .5 to install clamp kit install exhaust weights 602 line total .9 hr 2. truck was immediately returned 1/17/04 for excessive vibration and droning and was asked to return truck on monday. 3. truck taken in for repair on 1/19/04; 1563 repositon brckts for vibration vibration normal for a six cylinder operating as designed 602. 4. truck taken in for repair on 2/2/04 at 7 a.m.; kept truck all day and overnight. 2050 adjust exhaust, trans, and engines mounts to change common frequency of vibration. no charge reference vehicle 4k124143 stock vehicle 602. 5. on 2/4/2004, met with gm representative, dan sotelo; engine running as designed, no defects noted, said he rode in it (not while i was there) he did sit in truck with me and the mgr of service along with another gentleman. 6. on 2/23/04, truck taken to frank parra chevrolet, irving, tx, for vibration and abnormal noise. frank parra could not hear any noise so no corrections were done; checked for trouble codes, service bulletins and road tested. vibration in seat console. both dealerships are next to freeway with heavy traffic. the men at the dealerships do not appear to hear this droning (my brother calls it a rumbling noise). the vibration is felt by my brother, my husband, and a friend. my former mechanic could hear the noise and feel the vibration. something is wrong with this vehicle and i dont know what is causing it.
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM - EMISSION CONTROL - CATALYTIC CONVERTOR
04/24/2006210/01/2004
 My 2004 trailblazer had been in the maroone service dept 5 times during the first 27000 due to loss of power, engine stop on traffic light, and service engine soon light on. the last time was last week and the light is on again. i almost had accident on the turnpike trying to pass a car, car is not responding as necessary. i previously owner a blazer, and a trailblazer and they were great. this truck is giving me a hard time, lost of time and confidence. *jb