1997 Chevrolet Silverado 350 Vortec with engine code P1886

Question

I have replaced the 1-2 shift solenoid as well as the 2-3 shift solenoid. Still pulling up the code P1886 on my 1997 Chevrolet Silverado 350 Vortec

Answer 1

P1886 this code is strictly electrical start with it fuse, in the engine fuse junction if fuse is listed as TRANS ensure that has power, This truck has a VCM big difference between a ECM or PCM, So ground wire are important, along the transmission bell housing there are ground wires those have to be properly attached , most common cause for this is not receiving ground, The VCM gives this solenoid ground , if the VCM does not have a adequate ground for this circuit it wont work and the code is set. to help with this check everything else, such as the head light , heater control , fan motors.

Answer 2

P1886 CHEVROLET Code - Transaxle Shift Timing Solenoid Performance
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