new Silverado ticking on cold start

[redfire69]

Oil level is good. edit: how can I tell if my truck has fuel management. It's a 2500HD, I didn't think they had this feature.

[Vince@Meanstreets]

Originally Posted by redfire69

Oil level is good. edit: how can I tell if my truck has fuel management. It's a 2500HD, I didn't think they had this feature.

Window sticker?
Put up the last 8 of your vin. Some of the dealer guys here may tell you.

[Roscoe03]

Originally Posted by redfire69

Oil level is good. edit: how can I tell if my truck has fuel management. It's a 2500HD, I didn't think they had this feature.

2012's came with it. GM calls it Variable valve timing.

http://www.chevrolet.com/2012-silver...owertrain.html

Also if you have a DIC, you can switch it unitl it displays the V8/V4 mode and it will tell you as you're driving which mode you're in.

[carkrazy1987]

Bring it in to the dealer. Have em look at it. I have had a few bad lifters in new trucks. LY6 engine does not have afm. If is a 2500hd most likely LY6. Could also be bad oil pump or incorrectly installed oring. I am a heavy line tech for gm dealer and seen all these problems. Also u mentioned ur truck is a '12 model. Being we are now on the '13 there is a possibility ur truck has been sittin on the lot for a while. A simple oil change may solve the problem.

[carkrazy1987]

Originally Posted by Roscoe03

2012's came with it. GM calls it Variable valve timing.

http://www.chevrolet.com/2012-silver...owertrain.html

Also if you have a DIC, you can switch it unitl it displays the V8/V4 mode and it will tell you as you're driving which mode you're in.

Dod and variable valve timing are 2 diff things. Dod shuts of cylinders, vvt adjusts cam timing

Originally Posted by ccracin

Check the oil level. Sounds simple, but!!!!!! My Dad's 07 has done this since new. When he first heard it he checked the oil and it was off the stick. In the end it used more than 3 quarts of oil in 3500 miles. He had an ongoing battle with GM about it. They kept trying to fix it kept burning oil. Here is a short list, new valve covers, new oil baffles, new breather parts, new valve guides and seals, and finally all new pistons and rings. Before he got to the pistons and rings he contacted a lemon law lawyer and got a settlement. He did not get a new truck because he did not report the issue soon enough. My advise is get it to the garage and get on record asap. They did the pistons and rings while his case was in progress. This seems to have mostly solved the issue. I can not tell how much of a pain it was to deal with. His truck is an 07 and he just got finished with the issue last summer. 4 Years! Good Luck!

What ever dealer u brought it to sucks. There was a bulletin in early '08 to replace the pistons and rings. I remember having a few discussions w/ gm engineering on getting this resolved. In early '08 we had string of trucks come in at least once a week with varing degrees of oil consumption.

[T_Raven]

Does anyone know if the newer engines had anything done to solve the piston slap issue the earlier engines had? All three of my gen 3 engines do it, don't know if it's still an issue with newer engines.

[Jgpclone]

mabey its a exhaust leak check all the manifold bolt gm are notorious for them bolts to lossen up from time to time just saying gl man

[Roscoe03]

Originally Posted by carkrazy1987

Dod and variable valve timing are 2 diff things. Dod shuts of cylinders, vvt adjusts cam timing

My apologies, thanks for setting it straight.

[andrew5]

i belive that is an l96 motor.gm came out with a pip4978e bullitin for tick noise cold start.have had some oil pump problems built between 4/01/11 through 11/1/11.it is a lifter noise,but not a lifter problem.they have seen it on low milage motors.came out in feb 16 2012.hope that helps.IF that is the problem,the dealer would have to replace the oil pump. thx drew.

[ironworks]

My 2012 does the same thing. Dealer said they could do nothing about it. I figure when it finally blows up I will know what the real problem is.

Rodger