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westport70
08-31-2010, 10:36
94 6.5 no codes 2 problems may not be connected Recently purchased the the gmtd program and am still learning about it . Engine starts but as soon as i allow key to come off start mode it dies, then as soon as i turn key it starts again relax it dies again after about 4to 5 tries it runs perfect. the second thing when it starts somtimes it chugs down almost dying then takes off and runs well. I was wondering if there is an advance device that could malfunctioning causing this problem. fyi the timing is at 5.1 5.1 neg .74 this seems to be difficult to get the timing exactly where i want it i would be thrilled if any one could advise on the subjects. Thanking you in advance

JohnC
08-31-2010, 15:00
Could be a bad ignition switch...

suburbanK-2500HD
09-04-2010, 01:52
Look at this, i used this as a guide and i got it to work.
I used the GMtd program