07-06-04-025K
Service Bulletin Details
Public Details for: 07-06-04-025K
This informational bulletin was provides information for the technician of cold start ticking noises in the engine compartment and may be caused by the fuel pump and/or the fuel injectors and no repairs are needed for a normal condition.
- 2015 - 2014 - 2013 - 2012 - 2011 - 2010 - 2009 - 2008 -
Models from 2015
Models from 2014
Models from 2013
Models from 2012
Models from 2011
Models from 2010
Models from 2009
| 2009 BUICK ENCLAVE |
| 2009 CADILLAC CTS |
| 2009 CADILLAC STS |
| 2009 CHEVROLET TRAVERSE |
| 2009 GMC ACADIA |
| 2009 SATURN OUTLOOK |
Models from 2008
| 2008 CADILLAC CTS |
| 2008 CADILLAC STS |
File in Section: Bulletin No.: Service Bulletin Date: 06 - Engine 07-06-04-025K November, 2014 INFORMATION Subject: Information on Clicking/Ticking Sound/Noise Heard During Cold Start Models: 2009-2015 Buick Enclave 2010-2015 Buick LaCrosse 2008-2011 Cadillac STS 2008-2015 Cadillac CTS 2010-2015 Cadillac SRX 2013-2015 Cadillac ATS, XTS 2009-2015 Chevrolet Traverse 2010-2015 Chevrolet Camaro, Captiva, Equinox 2011-2015 Chevrolet Caprice PPV 2012-2015 Chevrolet Impala Limited 2014-2015 Chevrolet Impala 2015 Chevrolet Colorado 2009-2015 GMC Acadia 2010-2015 GMC Terrain 2015 GMC Canyon 2009-2010 Saturn OUTLOOK Equipped with 3.0L or 3.6L VVT Direct Injection V6 Engine (VINs G, D, 5, V, Y, 3 – RPOs LF1, LFW, LLT, LFX) This bulletin has been revised to add the 2015 Colorado and Canyon. Please discard Corporate Bulletin Number 07-06-04-025J. Do This Don't Do This Inform the customer that this is normal operation of the high pressure fuel pump and injectors. DO NOT replace the high pressure fuel pump and/or injectors. The 3.0L and 3.6L SIDI engines use a direct injection fuel system that operates at very high fuel pressures. A direct injection fuel system produces a rapid clicking and ticking sound that can be heard from the engine compartment. The sound is more evident when outside around the vehicle or when the hood is open. The sound is more noticeable during idle and is more frequent during a cold start, but lessens once the engine is warm. The rapid ticking noise on cold start up is the fuel pump (located on the rear of the left cylinder head) building up high fuel pressure. When the engine warm-up is completed, the high pressure fuel pump will continue to tick at a lower rate of approximately one tick per second during idle. The clicking sound is the fuel injectors pulsing on and off under higher fuel pressures. This sound is a normal characteristic of Direct Injection Fuel high pressure fuel system. DO NOT attempt to repair or replace any parts for this kind of clicking or ticking concern. The clicking or ticking sound is not indicative of any concerns with the engine or the vehicle. You may wish to give the customer a copy of this bulletin.