Q&A

i have a 1993 gmc yukon when i start it in the mornings the check engine light comes on and it runs really rough but it runs and when i stop to get coffee and cme back out its fine can anybody tell me what this is all about please and i changed my brake hoses in the front and ever since then my park brake light is on and my abs light is on i have bleed my brakes and they work fine can any body tell me about this how to get them to shut off