Code P1870
#1
Thread Starter
Join Date: Mar 2009
Posts: 2

Can someone give me a littte insite to what this code means it came on while driving no obvious change in driving, no hard shifting,
the car was in overdrive
i have reset the code and it has not returned yet
96 chevy blazer 4 door 4 wheel 4.3 liter
84,000
the way the code reads is not very helpfull
thanks in advance
the car was in overdrive
i have reset the code and it has not returned yet
96 chevy blazer 4 door 4 wheel 4.3 liter
84,000
the way the code reads is not very helpfull
thanks in advance
#2
Super Member
Join Date: Apr 2008
Location: Antigo, WI
Posts: 1,328









just type ur code in using the search function and youll come up with ur answer or look ur code up in the DTC section.
#5
Join Date: Aug 2009
Posts: 5

If you like go ahead and let someone sell and replace your transmission but here is my suggestion! Check around and see if you can find a minor vacuum leak! This can simply be the big round hose that goes from the fuel injection to the power brake hub! This is normally a push in connector which has about a 1/2 inch hose clamped on it! If there is any kink or the connector is not in correctly a leak will occur and the transmission will shift rough as though you will be thrown out of the vehicle! Try unplugging this connector and plug it back in hard and straight and maybe you will be lucky and fix your problem. If the vacuum is correct your transmission will shift better than you have ever experienced!
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knightryderx2
2nd Generation S-series (1995-2005) Tech
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02-27-2010 12:10 PM







