2003 GMC Sierra clogged fuel injector?

my mechanic says my fuel injectors are clogging, he recommended I run cleaner through a couple of tanks of gas, then he said GMC issued a Technical Service Bulletin stating that this has been a common issue and owners should use fuel injector cleaner (as my mechanic recommended) then start using High Octane on a permanent basis. My mechanic said it was because there is too much ethanol in gas these days and the engines have a hard time running on it. I think this is crazy, running a basic work truck on high octane. Also...........how do I use the cleaner, do I just dump it in and drive around? What kind should I use?

2003 GMC Sierra clogged fuel injector?

Usually the directions are on the container,Just dump it in and go to wherever. Drive it normally ,the stuff will do the job.

2003 GMC Sierra clogged fuel injector?

i dont know who your tech is...but i went to gm school and NO auto manufacturer recommends puttin ANYTHING in the fuel.there is alot of ethanol i nthe fuel these days,all the better reason not to add any cleaner..as it contains MORE.ive seen only 3 clogged injectors in my 16 yrs as a technician..i suspect its something else.Ive never seen the injector cleaner fix anything.try another shop.

2003 GMC Sierra clogged fuel injector?

It`s like Danie said, and you may just be experiencing spark tracking to ground at the spark plugs causing missfires.

2003 GMC Sierra clogged fuel injector?

Your mechanic is correct about the Bulletin, in fact the # is 03-06-04-030F. As for it saying to use high octane he misunderstood what it says, it states "customers should be encouraged to use Top Tier Detergent Gasoline" which all fuel from major oil companies is. Not to use Ma's Gas %26amp; Nails.

The cleaning that is to be done is with a tool that connects to the fuel rail, allowing the truck to run only on the cleaning solution. I know we charge $100 or so for an injector and throttle body cleaning.

If you need a copy of this TSB email me and I can get you a copy.