I get codes bank one and bank two Lean. I thought it may me an intake leak but i took it to the dealer ship and they said it would cause my truck to misfire if that was the case? He said he thought it was and 02 sensor but I thought that would give you a code for an
o2 sensor any advice?

 

Try cleaning the maf.

 

yes could also be o2... but try cleaning maf first... and cleaning injectors

 

I had already cleaned the maf sensor when i took it to get checked. The only thing i didn't clean was the air filter but i did that the next day. I haven't drove it since then though. I have added some injector clean stuff to the fuel. I'll just have to wait and see what this does.

 

its most likely a leak somewhere... get a can of ether and spray it around the seals of the intake and egr and stuff, if idle increase its a leak.

 

well i just change both oxygen sensor and it didn't do **** but cost my 230 bucks cus GM told me thats what it was now they don't want to take there **** back because i installed them well no **** why else would i buy them lol
?

 

they said if it was an intake leak that it would miss fire is this true?

 

it could not throw a code but still misfire.... the o2 sensor will not set a lean code. if it throws a lean code that means that the o2 sensor working and doing its job!!!

 

Well I changed the intake gasket yesterday and now the light hasn't come back on I drove it around for 5 min so hopefully that solved the problem. Thank a lot guys you guys now more than these damn GM tech here in this small shity town. lol thanks again.

 

hey take it easy on the gm techs, thats a little close to home!!!!