Question about 2002 Chevrolet Cavalier Coupe
What needs to be replaced for this code car has no power
DTC P1860 is a type "A" DTC and indicates a torque converter clutch pulse width modulation solenoid electrical problem. When set it disables shift adapts and inhibits TCC functions such as the lock/unlock when in 4th-OD. Possible flaky TCC-PWM solenoid.
If you have a 4T65E the TCC-PWM solenoid is located under the side cover assembly. Not exactly easy to replace DIY. Engine/tranny has to be dropped down on the sub-frame assembly.
You could check the input voltage (12 volts) and ground/low to the solenoid via the main electrical connector. And check the resistance of the solenoid at the respective pins on the above connector. Not sure what the value is but you can get that from a transmission service shop or the dealer's manuel.
Assuming you have the 4T65E auto transaxle the 20 way electrical connector is located driver's side top. You should see it looking in. Gray connector and the only electrical plug going to the transmission. Twist counterclockwise.
Other than checking the wire harness, and just an example once the solenoid is proven bad and replaced the local AAMCO charges around $500-$600 including the part but cost will vary depending on where you live. Good luck and sorry for the bad news. Keep me posted, be glad to help.
Posted on Jun 02, 2009
Do you have PO 753 and or code PO758 along with code P1860? check to see if the TCC fuse is blown. if yes repair the short to ground and if no check the circuit between the fuse and the trans connector for an open. repair open circuit. Rescan, clear codes and road test
Posted on Jan 01, 2010
Any dealer can tell you the code and what needs to be replaced
Posted on Jun 02, 2009
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Posted on Jan 02, 2017
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