ses codes

97 blazer 4+4
ses light comes on and in drive transmission slips if manually shift no problem
i can shut it off after couple hours will drive with no problems but ses light stays on. i can reset computer to clear codes and runs fine for a while maybe few weeks then same problem codes that they found were p0740 and p1860 any ideas?

Here is the code list (thank you blazee, now bookmarked).

Here is the code list (thank you blazee, now bookmarked).
think you forgot something :lol: . Here (http://www.automotiveforums.com/vbulletin/showthread.php?t=553044) is the OBD 1 & 2 code list.

think you forgot something :lol: . Here (http://www.automotiveforums.com/vbulletin/showthread.php?t=553044) is the OBD 1 & 2 code list.
Touche.

Codes are pointing to TCC PWM solenoid or wiring or fuse power to it problem.
Check all wiring and fuses and power feeds.
If the transmission is slipping bad your may have more problems.
What is transmission service and mileage and repair history?

45,ooo miles and serviced regulary last tranny sercice was about a year ago.
it really is not slipping that bad

and like i said it does not do it all the time

and like i said it does not do it all the time

Go over the wiring and wiring plug in's and fuse box real good.
And remember 97 was a bad year for ign switch problems.
If you are losing 12 volt power to TCC solenoid it will at up and set them codes.