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11-17-2012, 08:49 PM #1
About 8 months ago upon first start up of the day of my '00 Silverado (5.3 V-8), or even after sitting a while having a chance to cool, I hear a light knocking sound coming from the engine. It goes away after the engine is warmed up and the fluids have had a decent chance to circulate, but the knock has gotten worse either. What do you reckon?
11-17-2012, 10:21 PM #2
Have you checked your timing? Cuz if the timing is "Retarded" to far it can do that.1994 GMC Yukon, 2 door, Victory Red: 1992 Buick Park Avenue
Garage Link: http://www.gmtruckclub.com/forum/sho...1994-GMC-Yukon
11-17-2012, 10:27 PM #3
It could be piston slap or a rod knock. My 02 would knock when it was really cold out until the motor warmed up. I would let it idle until the knock stopped and then drive, it did not get worse over time though
1995 Silverado 4x4
6" BDS Suspension Lift-3" Body Lift-Add A Leaf in rear -Trailmaster SSV Shocks-Duel Steering Stabilizer Kit -AirAid Cold air intake-
4.56 Gears with Detroit Auburn Locker-Pro-Comp Traction Bars with duel shocks-Aluminum Skid Plate Kit-38.5" x 16.5" Mickey Thompson Baja Claws-Constant Dropping fuel gauge
2005 Yukon XL Jet Power Programmer, Bilstein Shocks, Bilstein rear springs, Helwig Anti-sway bars, EGR Window Visors, EGR Hood Shield, Denali Headlights, Headlight harness upgrade, GE NightHawk Bulbs, White Night Rear lighting system http://www.gmtruckclub.com/forum/sho...5-GMC-Yukon-XL
2002 Silverado ext cab 2wd (Sold)
2003 Yukon XL (Totaled)
11-18-2012, 09:31 AM #4
You described my truck's problem to a "T".
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I never thought about the timing, but I will give it shot. Mr. Plikey described my truck's problem to a "T".
11-18-2012, 06:37 PM #5
- Join Date
- Mar 2012
Timing on any GM truck engine after 1995 is computer controlled.You have the cold start knock and its just fine.
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I never thought about the timing, but I will give it shot. Mr. Plikey described my truck's problem to a "T".[/QUOTE]
11-20-2012, 01:59 PM #6
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