Ran my truck to the store today, first time its moved in almost 2 weeks. My service engine light came on so I ran my dash diagnostic check(odometer reset button with ingnition cycle trick) and it read 2 codes, 26 03, and a4 87. Anybody know what these codes are, I dont have an obd reader and I figured it was easier to ask ya'll first rather than drive in to the parts store and deal with the battery and wiper installation professionals

 

Those codes will not help you out. You need to get a tuner and get the CEL codes or go to someplace like Autozone and let them connect a OBDII scanner and get those codes. Then we can help you out.

You can go to my profile and click on the link for all the threads I have started and in there, there is a thread for ALL of the codes on the trucks.