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Error Code PO753
OK, This is my first real problem in 4 years with this Blazer. Long story short, I need help narrowing down a SES light code of PO753. I know it has something to do with the Trans., but have been given several possible causes by the parts stores. Autozone says the shift solenoid, and they have 3 different listings ($45; $26; $30) and they did not know which one, or where they were located (Haynes was no help). Checker had same code but said it was Trans. Modulator ($140) and could not tell me where it was. The reason for this issue is that my wife drove about 200 miles in 4WD, and didn't realize it. She called when the SES light came on and told me there seemed to be a loss of power. I had her check the usuals (oil, trans fluid, coolant, etc) which all came back fine, so I told her to drive it home and I would look at it when she got here. She arrived, and I took it for a drive and about 1/2 block away realized it was in 4WD, Took it out, and seemed to fix the problem, except the SES light stayed on, and the shift points for the trans seem to be off. Any help would be great, and I will be watching the sight most of the day.
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2000 Blazer 4.3L; 4WD; 4Dr
1998 Olds Intrigue 3.8L
2003 GMC Sierra 1500HD Crew cab
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