This does not specifically state Hummer, but...
http://www.automotiveforums.com/vbulletin/t158148.html
Flatrater []
Moderator
Joined: May 2003
Status: offline
Posts: 721
11-29-2003, 08:12 PM Re: 96 Regal Light (Post #3)
You cannot clear codes on any GM above a 96 model year. You cannot get flash codes in 96 and newer. Only way to clear codes is with a scan tool.
You need to go back to that shop demand your money back since they didn't fix the problem!
Go to the dealer and have them fix it. 1996 was the first year of OBD2 and evap codes. Your car computer monitors fuel vapor leaks.
__________________
ASE Master Tech
ASE Advanced L1
GM Master tech
11 years dealer trained
Bumper to bumper tech
Licensed Avaition mechanic
Please post or PM me I will answer within 2 to 3 days. If you email me it may take up to a week to answer. Give as much info as you can. Make, model, year, engine, trouble code and trouble code description. Help me help you. The more you tell me the more I can help you!!
Report Post | IP: Logged
Hope this helps and hope this is wrong.
Try disconnecting the battery for 5 minutes.
Black Lingenfelter Lux