Results 1 to 6 of 6
11-17-2012, 07:49 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, 09:21 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
Garage Link: http://www.gmtruckclub.com/forum/sho...1994-GMC-Yukon
11-17-2012, 09:27 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, 08:31 AM #4
You described my truck's problem to a "T".
- - - Updated - - -
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, 05:37 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.
- - - Updated - - -
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, 12:59 PM #6
By groceryman in forum General Chevy & GM Tech QuestionsReplies: 5Last Post: 06-15-2011, 03:59 PM
By Lil_Red_Chevy in forum GM PowertrainReplies: 5Last Post: 06-09-2011, 11:42 PM
By hardwickn in forum General Chevy & GM Tech QuestionsReplies: 3Last Post: 02-25-2011, 11:28 PM
By mvoss2576 in forum General Chevy & GM Tech QuestionsReplies: 10Last Post: 02-18-2011, 07:27 PM
By avionics in forum General Chevy & GM Tech QuestionsReplies: 1Last Post: 06-06-2009, 12:29 PM
Tags for this Thread