Having trouble when starting- truck engine does this surge thing about 6 times then starts-after first start it starts right up. Had a power chip in but took it out. When I do a diagnostic it reads these codes:po603 and p2285- can you help me understand this and let me know what needs to be done to fix truck as we have a long trip coming up in a few days and hate the thought of breaking down somewhere.

[QUOTE=brynsmom1;1898445]having trouble when starting- truck engine does this surge thing about 6 times then starts-after first start it starts right up. Had a power chip in but took it out. When I do a diagnostic it reads these codes:po603 and p2285- can you help me understand this and let me know what needs to be done to fix truck as we have a long trip coming up in a few days and hate the thought of breaking down somewhere.
Also had a reading where p1000 read??