ihave a problem with my 03 ls.the dealer diagnosed it as a broken rocker pulled out of cylinder head.they helicoiled it and reinstalled. a month later,same thing ,oppisite head. now 5 months later its doing it again.ive got 62000mi,and take very good care of it. has any1 else had that problem?

 

i have a 03 SS and no issues that i know of yet but please keep us posted on this

 

A rought idle, as at a stop light, without a check engine code eans usually only one thing to me: dirty fuel injectors from cheap gas.
Solutions:
1. Run a can or two of "Seafoam" thru your enngine, in the gas tank. Make sure that you stomp on the gas hard (wide open throttle) as many times as you can while using it to try to clean the crud from them as much as is possible (get them injectors open). I'm not saying drive over the soeed limit, just hit it hard when you can.
2. Don't EVER buy gas from independent gas stations, and try to stick to the main brands. I personally try to stick with Amoco or Shell. Also, even some major brand stations have more problems than others with water in the gas. Gas with ethanol (10%) can absorb more water than without.

http://www.cardomain.com/ride/2319272

 

its not the coil packs .the dealer called me and said they fixed the rocker stud (again),and when they went to start the engine the stud and the heilicoil pulled out.now theyre gonna have to replace the entire head.WTH! time to trade it in !!!!!!!!!! 3rd time since august 06,twice on the same head.