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03 Silverado engine issue(s)

chas0218

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chas0218 Enthusiast

chas0218

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Ok so my wife and I were bringing home our 6800lbs. camper back home about 180 miles total. Half way thru our trip the truck began shaking violently in 4th gear my immediate thoughts were crap I just burned up 4th gear. So I shift into 3rd and start looking for a spot to pull over but the shaking goes away. About 15 miles later the truck starts to do the same in 3rd gear but not as bad. Thank god I got to somewhere with a large enough should I could pull off. When I come to a stop the truck is barely idling and chugging BAD. So I shut it off get out and start to look at stuff. First thing is tranny fluid it is bright red and smells like the brand new stuff in the truck. Oil was the typical color and just changed in July. Replaced plugs 1 year ago (about 6k miles), and wires 3 months ago.

 

Now onto the truck. It is a 2003 5.3L 80k miles. I have had a random miss fire for almost 3 years along with a slight manifold exhaust leak (broken bolts). Until lately the exhaust leak would seal itself back up now but now it is leaking badly (for about 1 month) and the truck has no power and just shakes and chugs at lower rpms. Higher you go the more it cleans up but gives an random misfire almost constant in the higher rpms.

 

Are my cats clogged? Cam position sensor? I am at a loss and all of this would have been fixed in a timely manner if my daily driver commuter car would have just cost me $1000 in struts, tires and ball joints.

 

I am knowledgeable when it comes to cars but I have never experienced this other than on my 86 Camaro but that was a timing issue.

chas0218 Enthusiast

chas0218

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Posted

Codes stored said I have a Crankshaft sensor Malfunction. So I replaced and now the truck won't go over 2k rpm. I think I am screwed. haha

 

Any tricks to getting a rusted fuel filter off? I haven't replaced it in 20k miles so it is time.

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