Bulletins
| Bulletin | Bulletin date | Replacement Bulletin | Item no. | Summary | Added |
|---|---|---|---|---|---|
| ENGINE AND ENGINE COOLING - ENGINE | |||||
| 00266 | 01/01/2004 | 00266A | 10007596 | Loss of power, hesitates on acceleration on 4.8, 5.3 and 6.0 engines coupled with the 4l60e or 4l65e transmission. *tt | 07/02/2004 |
| 01119A | 01/01/2004 | 01119B | 10007576 | Roll-out for the gen iii small block engines with iridium spark plugs. also includes 2003/2004 m/l vans. *tt | 07/01/2004 |
| 030604060 | 10/01/2003 | 10004733 | Information on new spark plugs and gapping. various models including pontiac gto 2004. *tt | 01/02/2004 | |
| 00827C | 11/18/2003 | 10004256 | Service engine soon (ses) light on with tac module codes p1516 and possible codes p1514, p1515, p1518. *tt | 11/24/2003 | |
| 030849009 | 06/01/2003 | 10002870 | Revised engine oil pressure gage inaccurate or inoperative diagnostic information. *tt | 09/29/2003 | |
| 030604031 | 06/01/2003 | 10002858 | Revised diagnostic trouble code p1125. *tt | 09/29/2003 | |
| 030604033 | 03/01/2004 | 030604033A | 10002860 | Revised diagnostic trouble code p0336. *tt update. to include 2004 isuzu nqr commercial models. *tt | 09/29/2003 |
Consumer Complaints
| Fail date | miles | occurences | Purchase date |
|---|---|---|---|
| ENGINE AND ENGINE COOLING | |||
| 09/10/2009 | 97000 | ||
| I have had multiple ongoing electrical issues with this vehicle. starting in 2005, the exterior electronics (i.e. signal lights, stop lights, head lights, etc) began to malfunction. for example, i would trigger the signal for one direction and all of the signals for all directions would trigger... even pressing the breaks triggered all of the exterior signals. the dealer had a hard time isolating my problem, but after several visits, the dealer was finally able to diagnose and rectify it... they isolated it to a junction box where all of the electronics terminate. however, by this time, my vehicle was out of warranty, so i had to cover the costs for reparing the problem myself. my most recent issues, which, by the way, seem to be common issues, are triggered by a message stating, reduced engine power. this particular issue does not always render the same results... sometimes the vehicle's speed will significatly decrease to nearly a halt, but other times i may just experience increased idling of the engine, even if i am at a complete stop. my understanding, according to hundreds of reports that i have read on the message boards, is that this issue is caused by either a wiring harness that leads from the excellerator to the throttle body or it's a defective throttle body alltogether. i have experienced intermittent electrical problems with my windows as well, but this appears to be a minor issue when compared to the other two that i addressed above. i will file a formal complaint with gmc corporate office today and see where that goes. | |||
| 12/08/2008 | 117000 | ||
| December 2008- instrument cluster went out- speedometer no longer working december 2008- battery gauge no longer working march 2009- stabilitrak issues...sometimes the stabilitrak would work and at times it would not work july 2009 to january 2010- reduced engine power (almost cause 2 wrecks) could not perform a diagnosis...could not read computer. changed fuel pump. no more reduced engine power message august 2011- wheel bearing issues. reduced engine power (almost caused wreck...backed up traffic) september 2011- gas pedal sticking november 2011- reduced engine power...happens 5 times within a 30 mile trip. attempted to resolve problem several times, but running out of options. have to kill car in middle of highway or intersection to get car to work properly. | |||
| 06/29/2011 | 159906 | ||
| Randomly, the truck will go from driving completely normal to getting a message saying reduced engine power and then it cuts off power. this has happened 10 to 12 times, the last time it happened i could not drive more than approx 35 mph even with the gas pedal floored. we have replaced the supposedly defective part(s) to no avail. | |||
| ENGINE AND ENGINE COOLING - ENGINE | |||
| 07/01/2007 | 92000 | 1 | 06/18/2007 |
| My 2003 gmc denali is knocking in the engine and dealer say's it's normal and will not replace motor and my extended warranty is going to be up in a few hundred miles what do i do??? *jb | |||