[Blazerkane57]

So I have a 05 2500 all stock. Coming back from camping yesterday and a ding ding went off and my Grid heater light on dash lit. Truck seems to run alright...sluggish but can get around. Any ideas? Just looking for a place to start.
Thanks

 

[02smokin]

To much fuel return detected by ecm, pull your injectors and have tested

 

[GRUNT 11B]

That can be high return rate from your injectors. How many miles are on your injectors? You can try running a heavy dose of additive.

 

[Blazerkane57]

There is 220,000 on the truck. i am not the original owner.

 

[tsconver]

DO not bother with testing your injectors. At that many miles just get some good new bosch factory replacements. Do not get remans they are a crap shoot at best.

 

[subsea]

How does the ECM monitor fuel return?