PIP5331F
Service Bulletin Details
Public Details for: PIP5331F
This preliminary information communication provides information on a rattle, tick, or knock type noise. Any drivability concerns they should be addressed prior to the following diagnostic progression. A sound file or video with sound of the
- 2018 - 2017 - 2016 - 2015 - 2014 - 2013 -
Models from 2017
| 2017 BUICK ENCLAVE |
| 2017 BUICK LACROSSE |
| 2017 CADILLAC ATS-V |
| 2017 CADILLAC XTS |
| 2017 CHEVROLET EQUINOX |
| 2017 CHEVROLET IMPALA |
| 2017 CHEVROLET TRAVERSE |
| 2017 GMC ACADIA |
| 2017 GMC TERRAIN |
Models from 2016
Models from 2015
Models from 2014
Models from 2013
Bulletin No.: PIP5331F Published date: 02/20/2018 Preliminary Information PIP5331F Ticking, Tap, or Rattle Noise From Engine Models Brand: Model: Model Years: VIN: from Engine: to Transmissions: Buick Enclave 2013 - 2018 ALL ALL 3.6 LFY, 3.6 LLT ALL Buick LaCrosse 2013 - 2017 ALL ALL 3.6 LFX ALL Cadillac ATS 2013 - 2015 ALL ALL 3.6 LFX ALL Cadillac ATS-V 2016 - 2017 ALL ALL 3.6 LF4 ALL Cadillac CTS 2013 - 2015 ALL ALL 3.6 LFX, LF3 ALL Cadillac SRX 2013 - 2016 ALL ALL 3.6 LFX ALL Cadillac XTS 2013 - 2018 ALL ALL 3.6 LFX, LF3 ALL Chevrolet Camaro 2013 - 2015 ALL ALL LFX ALL Chevrolet Colorado 2015 - 2016 ALL ALL LFX ALL Chevrolet Captiva Sport 2013 - 2016 ALL ALL LFX ALL Chevrolet Equinox 2013 - 2017 ALL ALL LFX ALL Chevrolet Impala 2013 - 2018 ALL ALL LFX ALL Chevrolet Traverse 2013 - 2018 ALL ALL 3.6 LFY, 3.6 LLT ALL GMC Acadia 2013 - 2017 ALL ALL LLT ALL GMC Terrain 2013 - 2017 ALL ALL LFX ALL GMC Canyon 2015 - 2016 ALL ALL LFX ALL Supersession Statement This PI was superseded to change referenced PI to a new bulletin number. Please discard PIP5331E. Condition / Concern Customers may bring their vehicle into the dealership for a rattle, tick, or knock type noise. NOTE: If there are any drivability concerns they should be addressed prior to the following diagnostic progression. NOTE: Please take a sound file or video with sound of the noise prior to dis-assembly. This may be needed when contacting TAC or to be sent to engineering. This could be all the time, only under load, or intermittent depending on the severity of the noise. You may find this noise hard to isolate to one area in the engine. After you have recorded a sound file of the noise try to isolate the noise to a general area of the engine. At that point following the steps in this PI in ORDER may help pinpoint the concern. Recommendations / Instructions 1. Perform injector diagnosis to ensure there are no leaking injectors causing a noise due to excessive fuel in 1 cylinder. a) Perform GDS2 or AFIT test on injectors to isolate a leaking injector. b) Replace any out of specification injectors c) Reevaluate the noise. 2. Remove the intake manifold and visually inspect for excessive carbon on the intake valve stems and top of the valve causing noise. a) If carbon is present then follow the latest version of 16-NA-383 to clean the valves or replace heads as needed. b) Reevaluate the noise concern. 3. Remove the cam cover of the affected bank (both if needed) to inspect for soft or spongy SHLAS (stationary hydraulic lash adjusters) (Lifters). a) Push down on the rocker end at the SHLA to test for soft or spongy. (right side exhaust are most common but could be any) SEE PICTURE b) If soft or spongy SHLAS are found, carefully remove the affected head and inspect the oil passage below the head gasket for debris. c) If debris is found, inspect the camshaft caps for wear or discoloration due to lack of oil. d) If wear or discoloration is found then replace the cylinder head assembly with camshafts. e) If there is no wear or discoloration, clean the oil passages and replace the head gasket. f) Change the oil and filter. g) Reevaluate the noise concern. 4. Raise the vehicle while running or with an assistant inside. a) With chassis ears or a stethoscope, listen to the right and left side of the engine. b) Once the noise is isolated or if unable to isolate, remove the piston and rod assemblies from the affected bank(s) to inspect for either; a loose rod bushing in the rod, or a loose wrist pin in the bushing. We have seen both. c) There should be no metal through the oil for this condition. d) If this is found a piston and rod assembly will repair this noise. For all of the above engine replacement is not necessary. Please perform the repairs for these conditions. NOTE: If metal is found in the oil or throughout the system refer to the latest version of PIP5216. Once all of the above inspections and / or diagnostics are completed, If nothing is found to be the cause for the noise, engine replacement MAY be necessary. Warranty Information For Vehicles Repaired Under Warranty Use Appropriate Labor Operation For Process Performed. © 2016 General Motors. All Rights Reserved.