would oil cap from filler neck left off set off the check engine light. had oil changed at a gmc dealership. had truck serviced late tuesday afternoon and today, friday the light came on, has only been drive roughly 150 miles from change to light coming on. truck is a 04 gmc sierra sle extended cab 4x4 with the 5.3 liter in it. i know its under warranty BUT dealer service dept isnt open again til monday. thanks for any info.
- posted
19 years ago