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P1870 / P1728 CODE FIX for GM 4L60E, 4L65E & 4L70E with CANbus Computer Systems (2005-up).

NOTE: If you have a CANbus Computer System on your vehicle then you MUST use the A74741CB.

See CHART at bottom of the INSTRUCTION SHEET to see if you have a CANbus Computer System.

P1870 CODE FIX for (1996-99) GM 4L60E

The A74741QA can easily be converted into the A74741Q by cutting the stem off at the groove.

So, if you are not sure which one you need... order A74741QA

For Later Models: See SKU# A74741QA

TCC VALVE P1870 CODE FIX FOR 1996 - 2006 with OBDII Computer.

NOTE: The A74741QA is easily converted into the A74741Q by continuing the cut (groove) and removing the end of the stem. If you have a 1999/2000 and you're not sure which valve you need... order A74741QA

NOTE: WILL NOT WORK ON 2005-up VEHICLES w/ CANBUS COMPUTER.

Check out the CHART at the bottom of the INSTRUCTION SHEET to see if your vehicle has a CANbus computer.