Hi. I'm new to this site, and new to posting altogether. I reacently bought an 07 silverado with the 4.3. The truck only has 22,000 on the clock. The other day it started pecking loudly. It sound like a lifter to me, but with the low miles I don't know what to think of it. Has anybody else out there had this problem? Know of any fixes?
Here at work we have already replaced some of those lifters.
'00 1/2 TON ECSB 5.3L 4L60E
K&N Filter,Gibson Exhaust,Superchips Programmer,Billet Servos,'03+ Taillights,White Door Handles,Carbon Metallic Grille Emblem,6000K HID'S
It is a bad lifter or is it an oiling problem? Did you replace them with factory lifters?
was it when you just started it from a cold start? cause if its a pecking/knocking noise then thats something totally different that you dont have to worry about.
No its quiet on a cold start. It gets louder as the oil warms up. I also notice my oil pressure drops below 20 psi when its idling at a stop sign, after its warm. If I rev the motor and oil pressure comes up, the noise quiets down some. I would just take it to the dealer but i'm told the warranty is void since it has a rebild title. So i'm on my own for fixing it.
It is still under warranty take it to the dealership let them mess with it.Originally Posted by Kentucky'07
2004 EXC Silverado 6.2L
Mods:
6.2L L92, Ported and Polished stage 3 heads, 95mm Throttle Body, 100mm MAF, NA, Pacesetter LT Headers, Magnaflow X-Pipe Muffler, Electric Fans, 160* thermostat, 2" Drop Shackles, Hellwig Sway Bars Front and Rear, Monroe Reflex Shocks, NGK Spark Plugs, AMW Oil Catch Can, 17"x10" wheels on Kuhmo Tires.
Salvage or Branded title = no warranty. You're really gonna have to pull it and tear it down to find the problem. Could be a spun cam bearing causing oil pressure loss and lifter noise or a spun rod bearing....not common but known to happen on previously abused 4.3's...although mine has been abused for nearly 212K miles...
time for a 6.0 swap
Last edited by banker099; 04-02-2009 at 10:27 AM.
that is wear its at brotime for a 6.0 swap
04 1500 5.3L custom hp tuners tune by myself don have a pic of it yet so hear is my old 01 chevy 5.3 460hp 13.669 @ 116
Indeed! It will solve your problems....except for money...it just takes money.time for a 6.0 swap
T-RAV99 GMC | 5.3 | Skinny White Guy Tuned
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