Home > LS-58x Harnesses > Speartech Complete Harness Packages
If you're looking for a one-stop shop for your harness and its components, then buying a complete harness package from Speartech is the way to go.

Our harness packages include:
  • Speartech standalone wiring harness
  • Programmed Engine Control Module (ECM)
  • Programmed T42 Transmission Control Module (TCM) (if applicable)
  • Electronic Throttle Control (ETC) Pedal
We offer harness packages to those looking for a complete package to get up and running easily, at a discounted rate compared to buying each part separately.

We have been in the business for over 15 years perfecting the process of LSX harness building to ensure an accurate fit, quality appearance, and trouble-free operation. All harnesses are built in house, on an actual engine and test ran with a GM Tech 2 diagnostic scan tool hooked up to ensure proper functionality before shipping.
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LSA Complete Harness Package
LSA Complete Harness Package
Our Price: $2,600.00
LS 58x Harness Package (4L60E / 4L70E / 4L80E)
LS 58x Harness Package (4L60E / 4L70E / 4L80E)
Our Price: $1,695.00
LS 58x Harness Package (6L80 / 6L90)
LS 58x Harness Package (6L80 / 6L90)
Our Price: $1,545.00
LS 58x Harness Package (Manual)
LS 58x Harness Package (Manual)
Our Price: $1,495.00
58x LS Sensor Package
58x LS Sensor Package
Our Price: $450.00
Cruise Control
Cruise Control
Our Price: $400.00
6L80 / 6L90 Reverse Light CAN Relay Kit
6L80 / 6L90 Reverse Light CAN Relay Kit
Our Price: $250.00
   
 
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