There is also a bracket that attaches your exhaust downpipe to the passenger side exhaust manifold that is prone to cracking and rattling. Since you said its more or a rattle than a tick.

 

Rattle could be loose battery. Loose intake. Exhaust hanger. Brake line. Motor mount and more like stated above.

Tick is likely normal. Check fuel filter. Fuel quality. Like above temps have a lot to do with it. Cold requires more fuel during start and idle, until warm. Let it warm up about 15 minutes.

 

i too have the same rattle/vibration in my truck i have some aftermarket toys mine gets worse when its maintaining about 45 when its warm its really loud really annoying have no idea what it could be i buddy has checked the injectors and shut each one off to see and no dice does any one have anything?? you can still hear it when its even at a idle...not in gear 1700-2000 rpms can hear it i would really like to know what the hell this sound is i am sure there must be someone out there that knows!

 

How about some sound clips anyone??

 

I just went through the injector hassle myself, and because of my truck being put into service in December 2001 the warranty would not cover anything. I went through pensacola diesel and got Remanufactured injectors, all 8 with new o-rings, return line seals (brass washers) etc. For roughly $1200.00 . For Chevrolet (GM) to do all the work, they ask around $4500.00 parts, labor included. I just decided to do it myself, not hard to do, just a pain to get to, I found out mine were bad by finding excessive fuel in my crankcase. You might get lucky only to tear it down and find just a leaking return line dumping fuel into your valve assembly, but for $1200.00 you might as well replace the injectors while having everything apart.

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Have you ever seen oil/fuel dump out from around your front seal, if so your crankcase built to much pressure and had no where else to lead fluid to and went the easiest route possible, this is what happened to me, i noticed no loss in power, but noticed it in fuel economy, if so, you might want to get the injectors orr fuel line replaced asap before you "wash" your main bearings because to rebuild an LB7 its about $8500....Also you may notice a cylinder misfire.

 

I have some shakes and rattles in my truck to. I just turn up the radio. Problem solved

 

that has happened to me twice, it comes out from the breather tube on the passenger side, its mostly diesel fuel that comes out and it covered the whole underside of your truck and back of it. when mine first went i got about 10mpg and fuel covered my boat and the under side of my truck. the second time i pulled 20 quarts of fuel/oil out of my crank case and my undercarriage got soaked in fuel again.

 

Guys, I sold my edge J/A. So I unplugged it and notice that the raddle is gone. I have ran it around a couple of days and problem is solved. What the . Now its time for EFI Live...

 

My lb7 is a california model with the vacuum pump on the passenger side and it makes the most annoying ticking noise ever!

 

my dad has an 03. its all stock but there is no tick or rattle. and if you have a programmer that voids your warrnty unless you buy one that doesnt leave a print. then youre good.