2003 TRAILBLAZER 4.2L JERKING WHILE DRIVING HWY. SPEED WITH CODE P1860. WHAT IS THE ROOT CAUSE OF THIS PROBLEM
Hi there,
This code indicates an issue with the TCC PWM. Here is a list of possible causes.
P1860 CHEVROLET - TCC PWM Solenoid Circuit Electrical Read more: https://www.autocodes.com/p1860_chevrolet.html
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