Check Engine Light and Misfire Due to One or More Stuck Closed Fuel Injectors on Chevrolet Express 1500

One or more fuel injectors may become stuck closed causing an engine misfire and the Check Engine Light to illuminate. Our technicians tell us that this problem can be caused by some fuel additives. There are special procedures which may be able to restore the affected injector. If this fails the affected injector must be replaced.

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Average mileage: 121,483 (224–215,000)
Engines affected: 4.3L V6, 5.0L V8, 5.3L V8, 5.7L V8, Gasoline
10 model years affected: 1996, 1997, 1998, 1999, more2000, 2001, 2002, 2003, 2004, 2006
32 people reported this problem
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Viewing 1 - 15 of 15 problem details
Engine hesitation and loss of power. Rough idling and when at a stop light and about to take off the rpms drop and jerk like if wanting to die but as soon as i let go of the gas it stops and takes off heavy
i have a check engine light on with the code p0303 i have changed the coil pac, changed the spark plug, checked the spark plug wire and still no luck what do you suggest i do next do you think it may be internal or is their something else i can check thank you cliff
Is there an additive which may restore this injector, or is too late and must be replaced.
2002 Chevrolet Express 1500 - 4.3L V6 70,000 mi,
I think i have the same problem with fuel injector. The check engine light starts blinking when i go up the hill. I already replaced the catalytic converter. But that didn't help. I consulted with technician and he that that the problem is in the fuel injectors
2004 Chevrolet Express 1500 - 5.3L V8 123,632 mi,
The engine misfires and when I press the gas it doesn't have power and burns a lot of gas and it hasn't been fixed
Check engine has been on for a few months and the engine misfires, backfires, and chugs when you first start out. After it warms up it is fine. Today it stopped working. When you turn the key, you don't even get a click. Have cleaned battery terminals and posts, but i still does not even click. Ideas?
1996 Chevrolet Express 1500 - 4.3L V6 215,000 mi,
Engine light came on, it was running ruff and sound like there was a exhaust leak. finely the engine light came on I saw it starting blinking three times. Now it will start up but will not stay running. When I get it running as soon as I give it gas it dies.
2001 Chevrolet Express 1500 - 5.7L V8 95,000 mi,
Misfire on cylinder 4. Started happening when I switched from premium gas to regular gas. I used premium gas for the longest time (as this van "appeared" to do better with gas mileage with premium 10.5mpg to 11.5mpg all local stop-and-go driving), but when gas got up there in cost switched to regular gas. It took about 6-9 months but then the check engine light would flash. I through a bottle of techron in it and it went away for a while. It came back so since then I've switched back to premium gas and the misfire hasn't reappeared...
1996 Chevrolet Express 1500 - 5.7L V8 78,000 mi,
I got an oil change and then drove 160 miles to the nj shore and back . My van is shaking and putting while in drive , trouble code on my obd scanner is p0300 p .
2004 Chevrolet Express 1500 - 4.3L V6 136,333 mi,
Stumbling on eceleration
Check engin light blink. Check your air filter. I change me problem gone
2004 Chevrolet Express 1500 - 4.3L V6 171,000 mi,
Hi how are you. Sametimes ever 2 monts 2 days. Isnot starting. And i dont touch 2 days than My. Van after 2 day star .I don't know what is the problem.i went the mecanic he chance fuel senser.when I went the mecanic my car was starting .I tol him story he said maybe fuel senser than he change still I have same problem
2004 Chevrolet Express 1500 - 4.3L V6 134,000 mi,
Take long to start up and shake when give gas
i have a 04 Chevy express 1500,4.3 i just replace the engine and i have change a lot stuff to keep the van running...the major current situation now is that the van dont start once and i have to crank it like three time before it start and when am road like on a hill it is like there is gas coming through so the van can move...i notice it will slow down struggling to move and f i press hard and it will break through and the van will move very well.the engine have a good power but something is not working right. i have replace the turtle body and fuel filter and put injector cleaner in fuel thank but the issue still persist. please all help will be appreciated
1998 Chevrolet Express 1500 - 5.7L V8 116,000 mi,
Driving down the highway at 70 mph, developed a serious misfire. I added lucas to the fuel about 15 miles before this.. truck has multiple misfires, and is still unresolved after multiple attempts to fix it. Any help would be greatly appreciated.