Quote:
Originally Posted by duke350
Changing the ecm on that car should take less then a half hour. Its the box on the inner fender behind the battery. It looks about like this http://partimages2.genpt.com/partimages/808744.jpg. You might have to get it programmed to your car before it will work though. Looks like its about $170 at napa, and they list 2 diff ones. You can get a replacement at a junkyard for less, and it may not require programming, but you never know what you are getting for junkyard parts.
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I've used Napa twice for the ECM on my truck.
About $250.00 with programming. (I got a discount on the unit, plus $125.00 to flash the program; Napa did the whole set-up)
If you buy a salvage yard unit, you'd better get it from the exact same vehicle as yours, otherwise certain options may not work.
These ECMs are used on a variety of vehicles, including Tahoes, S10s, asnd so on (with differnet 3nignes like 4 cyl, 6 cyl, and 8 cylinders)
If you "do-it-yourself", do not forget to remove the knock sensor off the bottom of the ECM. Remanufactured units don't come with it.