I've got a 1999 Chevy Silverado Z71 short bed reg cab (new body style) that keeps throwing a P0452 Engine code and 8 ABS codes! Yes 8! ABS codes: C0265, C0245, C0251, C0246, C0242, C0252, C0281, & C0241. I'm thinkin one or two codes are tripping the rest... The ABS & red Brake light will come on simultaneously most of the time after I drive a couple miles or so. Truck drives wonderfully and brakes work fine.

The Engine code P0452 is an Evap System pressure too low/ voltage too low code. I'm guessing the Fuel Pressure Sensor on top of the fuel tank? Other ideas? Is it easier to lift the bed or drop the tank? Any way to be SURE it's this sensor? I have freeze frame data if that helps.

Any ideas where to start with the ABS issue?? ABS module maybe? Any info is appreciated. An ABS code list would be cool. Would I need to get the ABS module coded at the dealer or can I pick one up at the yard and plug n play?

 

Just a little update.. I cleared all the ABS codes and the olny one that has come back is the C0265 code which I believe is the EBCM circuit. If anyone has any info or pointers to trouble shoot please post up. The 60A fuse under the hood is good and the 10A in the cab for ABS was good. Couldn't find an ABS relay though?