Notices
1999 - 2006 (GMT800) Section for all discussion related to the 1999-2006 Chevrolet and GMC trucks.

2004 Silverado 1500 misfire issue

Thread Tools
 
Search this Thread
 
Old June 25th, 2019, 8:22 PM
  #1  
CF Beginner
Thread Starter
 
jstem's Avatar
 
Join Date: Jun 2019
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
Default 2004 Silverado 1500 misfire issue

I have a manual 2004 Silverado 1500 4.3l and I seem to be having a reoccurring misfire issue. The truck occasionally (not everytime) will struggle to make it up hills when I’m accelerating. It appears to lose power and the stick shift starts violently shaking. Occasionally it will cause the check engine light to start flashing for a few minutes as well but not every time. The issue seems to come and go.



I recently took it to a mechanic and they put all new plugs, wires, and replaced the distributor cap and that didn’t solve the issue and I took it back and they installed one new o2 sensor for me. The truck ran fairly well and the o2 sensor seemed to have solved the problem for a few months however now it’s starting todo the same thing again. I’m not sure what to look into fixing next.



Any information would be greatly appreciated! Thanks


Old June 25th, 2019, 9:46 PM
  #2  
CF Monarch
 
oilcanhenry's Avatar
 
Join Date: Oct 2017
Location: USA
Posts: 4,606
Received 263 Likes on 255 Posts
Default

Originally Posted by jstem
I have a manual 2004 Silverado 1500 4.3l and I seem to be having a reoccurring misfire issue. The truck occasionally (not everytime) will struggle to make it up hills when I’m accelerating. It appears to lose power and the stick shift starts violently shaking. Occasionally it will cause the check engine light to start flashing for a few minutes as well but not every time. The issue seems to come and go.



I recently took it to a mechanic and they put all new plugs, wires, and replaced the distributor cap and that didn’t solve the issue and I took it back and they installed one new o2 sensor for me. The truck ran fairly well and the o2 sensor seemed to have solved the problem for a few months however now it’s starting todo the same thing again. I’m not sure what to look into fixing next.



Any information would be greatly appreciated! Thanks
Did they test fuel pressure?
Old June 25th, 2019, 9:49 PM
  #3  
I'm here for the party
 
Irish_alley's Avatar
 
Join Date: Feb 2019
Location: Maryland
Posts: 1,414
Received 71 Likes on 66 Posts
Default

check your codes and check the fuel pressure




All times are GMT -5. The time now is 10:20 PM.