p1870

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gmcjim

04-21-2005, 06:47 PM

transmission comp. slipping
2000 gmc jimmy
any suggestions?

blazes9395

04-24-2005, 01:37 AM

Classic P1870...do a search on the blazer or even this jimmy forum. Its very common. It could be a variety of things, PWM sensor, PCS solonoid, or even a worn out valve body. When was the last time you did a full tranny fluid and filter flush? Does it shift hard between gears...especially 1st to 2nd? Does the TCC lock up? Hope this helps.

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