Consumer Complaints


Fail datemilesoccurencesPurchase date
ELECTRONIC STABILITY CONTROL
09/10/200997000
 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.
12/08/2008117000
 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.