Some help with my truck

snowbrdkid0 · May 30, 2006

I have an '03 silverado w/ 4.8 and 3.73 gears. it has about 56000 miles on it. i have some questions as i have just found this site. Help would be greatly appreciated.

1. Recently when i first start my truck, there is a clicking noise in the engine. It doesnt matter if it is hot or cold outside, just when the engine hasnt ran for a while. it goes away after a minute or two. it increases its "clicking"(or knocking) with increases rpm. any suggestions???

2. I burnt the fuse for my horn, so i replaced it. About two weeks later, it burnt again. I dont use my horn that often. Any thoughts??

3. When i accelerate hard, my oil pressure often goes up to 80. Is that a problem? Is it normal? I have asked a few people about this and noone seems to come up with an answer.

any help would greatly be appreciated.

thanx

snoman · May 30, 2006

1. Recently when i first start my truck, there is a clicking noise in the engine. It doesnt matter if it is hot or cold outside, just when the engine hasnt ran for a while. it goes away after a minute or two. it increases its "clicking"(or knocking) with increases rpm. any suggestions???

Sounds like hyd lifter tick. You might change you maintanance invertal (more often) and oil brand too. There are some after market solutions that you can add the engine oil to clean lifters and sometimes cure problem. It is not fatal.

2. I burnt the fuse for my horn, so i replaced it. About two weeks later, it burnt again. I dont use my horn that often. Any thoughts??

You either have a short in the circuit the powers the horn or the horn itself.

3. When i accelerate hard, my oil pressure often goes up to 80. Is that a problem? Is it normal? I have asked a few people about this and noone seems to come up with an answer.

It is quite normal for oil pressure to increase with RPM at time especailly when engine is cold. What grade oil are you using?

snowbrdkid0 · May 31, 2006

thanks for the help

ive been using 5-30 castrol oil and ive been changing it every 3000 miles. it has barely been 1000 miles since my last change

snoman · May 31, 2006

thanks for the help
ive been using 5-30 castrol oil and ive been changing it every 3000 miles. it has barely been 1000 miles since my last change

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Castrol is not one of my top picks. Not that it is a bad oil, it is just not as good as it was 15 or 20 years ago as I think they have changed the base stock for their oil (what type of crude it is based on which has a effect on over all oil properties)

snowbrdkid0 · May 31, 2006

alright thanks...ill try changing oils next time. 5-30 still ok or would a different weight be better? and if a different weight is better would it have any other effects?

snoman · May 31, 2006

alright thanks...ill try changing oils next time. 5-30 still ok or would a different weight be better? and if a different weight is better would it have any other effects?

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5w30 is okay if oil pressure is good. you can use 10w30 as well if you want too and it may help lifter tick but I would not use anything heavier in that engine.

2kwolfgang · May 31, 2006

My 99 GMC Sierra was also going through fuses for the horn. I think it uses a 15 amp fuse. If you go to a 20 it should become a non-issue. I could have these numbers wrong but just step up 5 amps from whatever the stock fuse is.