05-13-2014, 04:23 PM | #1 |
376 cubic inches of fun
|
Lifter upgrade done!
After nearly 4 years of cringing every time I started the car, I got the AFM lifters upgraded per the TSB.
Two weeks and nothing but flawless starts, plus the valve train sounds generally better under all conditions. If you're on the fence about doing this, get'er done!!!! |
05-13-2014, 05:32 PM | #2 |
Drives: 2013 ZL1 M6 Convert Triple Black Join Date: Feb 2014
Location: Simpsonville SC
Posts: 408
|
I've noticed a slight tick when I start my car when cold out. It literally goes away after maybe 2 seconds. How bad does it need to be before they'd do it? my 2010 only has 19k miles
|
05-20-2014, 11:17 PM | #3 |
Drives: 2010 SSII w RS & Sunroof Yellow Join Date: Aug 2009
Location: West Suburbs of Chicago, in a Courthouse Somewhere
Posts: 953
|
I had mine changed at 5000 miles, best decision I ever made, the whole engine ran better after !!
|
05-25-2014, 10:16 PM | #4 |
Drives: 2010 Camaro 2SS/RS IOM L99 Join Date: Jun 2013
Location: Hampton, VA
Posts: 88
|
Does the TSB still apply to cars out of warranty?
__________________
-RotoFab CAI
-Kooks LTH -Ported TB -SLP Loudmouth I Muffler Delete -V8 Only Range Device -Technostalgia Advanced Taillights -Elite Engineering Catch Can -Anvil Notch Spoiler |
05-26-2014, 07:14 AM | #5 |
376 cubic inches of fun
|
|
05-28-2014, 08:04 PM | #6 |
Drives: 2011 Camaro 2SS/RS Join Date: Oct 2013
Location: San Jose, California
Posts: 1,371
|
Happen to have that TSB number?
__________________
|
05-29-2014, 09:31 AM | #7 |
376 cubic inches of fun
|
#10-06-01-007B: Active Fuel Management (AFM) Engine, Valve Lifter Tick Noise at Start Up When Engine Has Been Off for 2 Hours or More (Evaluate Noise and/or Replace Valve Lifters) - (Nov 17, 2010)
Subject: Active Fuel Management (AFM) Engine, Valve Lifter Tick Noise at Start Up When Engine Has Been Off for 2 Hours or More (Evaluate Noise and/or Replace Valve Lifters) Models: 2007 Buick Rainier 2009 Buick LaCrosse Super, Allure Super (Canada Only) 2007 Cadillac Escalade Built Prior to April 1, 2006 with 6.2L Engine RPO L92 (These engines were built with AFM Hardware but the AFM system was disabled) 2010-2011 Cadillac Escalade 2007 Chevrolet Monte Carlo 2007-2009 Chevrolet Impala 2007-2011 Chevrolet Avalanche, Silverado, Suburban, Tahoe, TrailBlazer 2010-2011 Chevrolet Camaro SS 2007-2011 GMC Envoy, Sierra, Yukon 2007-2008 Pontiac Grand Prix 2008-2009 Pontiac G8 2007-2009 Saab 9-7X Equipped with AFM (Active Fuel Management) and V8 Engine RPO L76, L94, L99, LC9, LFA, LH6, LMG, LS4, LY5 or LZ1 Attention: This bulletin only applies to the AFM V8 engines listed above. It DOES NOT apply to Non-AFM Engines. If you are dealing with a Non-AFM engine that is experiencing a similar noise, please refer to Engine Mechanical > Diagnostic Information and Procedures > Symptoms in SI. This bulletin is being revised to add the 2011 model year. Please discard Corporate Bulletin Number 10-06-01-007A (Section 06 - Engine/Propulsion System). Condition Some customers may comment on an engine valve lifter tick noise that occurs after the engine has been shut off for at least two hours. The tick noise may last from two seconds to ten minutes. Cause This condition may be caused by any of the following: Aerated oil in the valve lifter body, resulting in the valve lifter being unable to purge the air quickly. A low engine oil level or incorrect oil viscosity. Dirty or contaminated oil. A low internal valve lifter oil reservoir level. Debris in the valve lifter. A high valve lifter leak down rate. Correction If the SI diagnostics do not isolate the cause of this valve lifter tick noise and normal oil pressure is noted during the concern, perform the following steps: Inspect the engine oil condition and level. Refer to Owner Manual > Service and Appearance Care > Checking Things Under the Hood > Description and Operation > Engine Oil in SI. ⇒If the engine oil is more than one quart low, an incorrect oil viscosity is being used or if poor quality/contamination is observed, change the oil and filter. Note: Allow at least a two hour soak time between engine OFF and start up when evaluating the tick noise. Start the engine and evaluate the valve lifter tick noise. ⇒If the valve lifter tick noise is still present, replace all 16 valve lifters. Refer to Valve Lifter Replacement in SI. Parts Information Note: A V8 AFM engine requires 8 AFM lifters and 8 non-AFM lifters for a total of 16 lifters. Part Number Description Qty 12576400 Non AFM Hydraulic Valve Lifter 8 12632143 AFM Hydraulic Valve Lifter 8 GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information. WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION © 2010 General Motors. All rights reserved. |
05-29-2014, 08:06 PM | #8 | |
Army EOD Vet
Drives: 2010 2SS/RS blk/blk/blk Join Date: Jul 2009
Location: Centreville, MD
Posts: 522
|
I recently had a low engine oil warning come on my car... wonder if this could be the same issue..... similar noise?
__________________
2010 2SS/RS Blk/Blk Camaro F1A Procharger
|
|
02-23-2016, 11:53 AM | #9 |
Drives: Black L99 2SS/RS Join Date: Mar 2014
Location: San Antonio, TX
Posts: 1,862
|
|
02-23-2016, 04:21 PM | #10 |
376 cubic inches of fun
|
|
|
|
|
|