What we do here is replace all 8 injectors, all 8 high pressure supply lines, return seals etc and also do GM thermostats and fresh coolant while we are in there. This puts cost in the range of what a dealer gets to do their basic swap job. We use genuine GM/Bosch remans and nothing else.

For those willing and able to go the extra mile to protect their investment we add lift pump setup and Mega filter setup. The jury is still out on how long they will last, but it sure has to help.