02 lb7 smokes at idle/lumpy idle. 193K now. injectors changed at dealer at 88k. Dealer now says pump and regulator plus 6 hours labor $1600?? anyone have this diagnosis?

any fuel in your oil?

No fuel in the oil. i removed the banks 6 gun before taking it in and had the same problems

what color smoke is it

grey in color. not dark black or real white.

you might just have to eat the cost on those the regulator is 400 alone for just the part not sure about the pump. ive heard its a b**** to replace the regulator though

I was able to find a regulator on ebay for $150. I might have just got lucky though. I did the install myself. There are a few things to remove to get to it but it wasn't to difficult to do. The dealership wanted to charge me $450 for labor.

Picked up the truck after dealer replaced injector pump and regulator. 10 miles later, SAME SYMPTOMS! Returned to dealer and they replaced injectors again under warranty and FIXED THE ORIGINAL PROBLEM. As you can tell, I'm a LITTLE upset. After reviewing the parts list, I noticed that the regulator was not listed. Does anyone know if GM Part# 97720662 injector pump includes the regulator? I know that they are available separate for $844 and $403 but its not listed on my bill that way. Think I got took. Any help would be great. Thanks!

You can get either the regulator of the fule pump which includes the regulator

What are the symptoms of each? Talked with a local non-dealer repair shop and he says the pumps don't go south that often.