L99 Lifter noise at startup
Admin Emeritus
Joined: Dec 1997
Posts: 11,157
From: Nashville, TN area
Yes there is a TSB, and there is a new version of the L99 lifter being swapped out on cars that have the tick on startup. It has nothing to do with the filter on the car, its all in the lifters. I have had my oil changed at the dealer, and only AC Delco filters have been used. The lifters are the problem. There have been a few to get th new lifters, but never said if it took care of the problem.
Registered User
Joined: Apr 2010
Posts: 47
Re: L99 Lifter noise at startup
Made a appointment to see service manager today... I live in small town north of London Ont.. Canada------My dealer is in a nearby town.... Big GM store.. They sell lots of luxury cars and trucks... probably only 6-8 Camaros..
I bought car 2SS/RS Sept 10 with 17,460km now has 18,311km I have car in heated garage, with collision off it until next May (winter in Canada)
Car ticks for 20 seconds, better at 30 seconds and quiet at 1.5-2 minutes Car runs fine ..no drone..
I explained, I preferred to leave factory engine sealed..
Service manager, says he will look for recent info on lifters... He has some issues with 5.3's but no 6.2's.. He reminded me that the TSB's are used to help people with specific problems... A customer with remote start... e.g. will never hear it... lol He assured me the ticking and piston slap will not cause engine to fail 
He will do whatever I want for 5 years and 160,000km 
If I keep this car 10 (ten) years it will not have 100,000km (60,000miles) on it... so I will get it out in the spring, and drive it like I stole it....
I bought car 2SS/RS Sept 10 with 17,460km now has 18,311km I have car in heated garage, with collision off it until next May (winter in Canada)
Car ticks for 20 seconds, better at 30 seconds and quiet at 1.5-2 minutes Car runs fine ..no drone..
I explained, I preferred to leave factory engine sealed..
Service manager, says he will look for recent info on lifters... He has some issues with 5.3's but no 6.2's.. He reminded me that the TSB's are used to help people with specific problems... A customer with remote start... e.g. will never hear it... lol He assured me the ticking and piston slap will not cause engine to fail He will do whatever I want for 5 years and 160,000km If I keep this car 10 (ten) years it will not have 100,000km (60,000miles) on it... so I will get it out in the spring, and drive it like I stole it....
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