1. Remove fuel line bracket 2. Disconnect and remove the two bolts securing the glow plug module to the bracket 3. remove the two bolts on the glow plug module’s heat shield 4. remove the four bolts that are securing the glow plug module 5. Remove the stock fuel pressure relief valve from the fuel rail. 6. Take the O-ring off of the stock fuel pressure relief valve and put it on the new fuel pressure relief valve 7. Before reinstalling your new fuel pressure relief valve lubricate the threads with petroleum jelly 8. Install the new fuel pressure relief valve and torque from 55 ft. lbs. to 60 ft. lbs. 9. Put the four bolts that secure the glow plug module back in place. 10. Reinstall the two that secure the glow plug module’s heat shield 11. Reinstall the the two bolts that secure the glow plug module to its bracket 12. Reinstall the fuel line bracket
'04.5 -'10 Trucks ONLY Solves most P1093 and P0087 codes. GM's fuel pressure relief valve is notorious for opening under hard load and dumping fuel rail pressure. Once this happens, it will continue to happen and engine output will deteriorate quickly. 30 minute install, instructions and replacement valve included.
