SES code 300

Justin · Post by **Justin** » Thu Jun 05, 2003 2:08 pm

dealer called and said the problem was a misfire #4 throwing code 300, not 400. Service technition said engine skipped to throw the code

they will be replacing the fuel filter and adding fuel treatment to hopefully clean the injectors. If the problem persists, they will replace the fuel injectors themselves

The truck is coming up on 34,000 miles and warranty is expiring. This dealer said that if the code is thrown again it would be covered ( i think only till 100,000 miles)

Not bad ...hopefully this solves the problem

Steven · Post by **Steven** » Mon Jun 09, 2003 6:06 am

Good for you, looks like the dealer is willing to work with you.

Hope it works out.

Justin · Post by **Justin** » Thu Jun 12, 2003 6:44 pm

finally happy!

dealer replaced the fuel injectors, changed the fuel filter and added some fuel treatment free of charge...quite shocked....I think it was because this problem has been occuring for quite some time and it hasn't been fixed. So far i have put 200 miles on it and no ses code..I drive 180 miles tomorrow through mountains so I will keep people posted as to whether it goes on again... It normaly went on at Lee, massachusetts (highest elevation in mass.) during my trip from Rhode island to my school around Albany NY

wish my truck luck

Justin · Post by **Justin** » Fri Jun 13, 2003 4:36 pm

well my luck wasn't any good. It went on again...What should I do? Lemon law? Ask for a new motor? I am a little upset

Justin · Post by **Justin** » Mon Jun 30, 2003 3:31 pm

the truck has been at the dealer for a week now for the code 300...they replaced the wires, distributor cap, fuel injectors, and called technical assistance to bring up a case number to order crank sensor shims which increase some gap to help misfiring on #1 and 4.. they placed 2 in there and it still misfired...the dealer now has a field manager on the case...he/she reported to (1) place 2 more shims in, if it still misfires, (2) take oil pan off and look inside motor (a) anything major= replace motor (b) anything minor = fix (c) nothing to see wrong = replace motor

I will know tomorrow what happens...I get a loaner tomorrow because the company truck i have goes in for new tires, oil change, etc. I hope I get a new motor with another 36k warranty

Justin · Post by **Justin** » Tue Jul 01, 2003 7:37 pm

dealer did step one and unsucessful...they re going to replace the crank sensor now before taking the oil pan off...I do have a loaner truck..2004 silverado z71..its nice but the 4.8L is weak

I'll keep updates and whether or not i get a new motor

Conman · Post by **Conman** » Wed Jul 02, 2003 5:34 am

Justin wrote:dealer did step one and unsucessful...they re going to replace the crank sensor now before taking the oil pan off...I do have a loaner truck..2004 silverado z71..its nice but the 4.8L is weak

I'll keep updates and whether or not i get a new motor

Wow, Def. let us know. I really can't believe they are having such problems with the engine.

Good Luck,

Con