check engine light on - code 1870 HELP!! - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 10-12-2004, 02:42 PM   #1
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Default check engine light on - code 1870 HELP!!

it'* the ecm and solenoid release switch code. what repair horrors am i lookin at? is it a simple or a an involved diagnosis? what do u guys think?
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Old 10-12-2004, 02:45 PM   #2
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DTC P1870 Transmission Component Slipping


That'* what I got, but I'm not OBD2 fluent all the time. From that, I'd have to ask you if it takes a bit more gas to get going in first gear? Maybe an increase in rpms when climing a hill?

What does your trans fluid look like? (check this after driving for at least 5 minutes)?
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Old 10-12-2004, 02:53 PM   #3
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only 3 weeks with the car, so don't have a feel whether there is a change in performance. but i can say, the trans feels smooth, and climbin a hill is exhilerating. not knowing what it felt like before, i just cant detect any driving problem that would be related to this code.
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Old 10-12-2004, 02:56 PM   #4
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Stire that trans up good, and look at the fluid. You don't want to see any friction material mixed in (tiny dark particles...almost microscopic). That'* what I'd expect if your TC is slipping.

The best thing to do is get a scantool on the car and look at TC slip in lockup. Short of that, you may benefit from a flush.
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