Our Deal of the Week features new GM LS Control book!

Save 20% on How to Use and Upgrade to GM Gen III LS-Series Powertrain Control Systems by taking advantage of our "Deal of the Week!" This deal ends Sunday, August 11.

Just add How to Use and Upgrade to GM Gen III LS-Series Powertrain Control Systems to your cart and choose "Continue Shopping" to save on one additional book of your choice!

Use Discount Code DOW (for "deal of the week") at checkout.

Orders can be placed online or over the phone by calling 1-800-551-4754 during regular business hours.