S10/T10 P/U 2WD L4-2.2L VIN 4 (1995)
Illustrated is the new page of the 1995 Driveability and Emissions Manual with VCM-A.
The statement under "DTC P1810 Will Pass When" has changed. This statement should read:
The VCM-A will report a "Pass" when range signals "A" and "C" have a legal combination and vehicle is driven with TCC "ON" for 24 seconds.
Add this to your 1995 Service Manual.