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Chrysler Penstar

The TEHCM for the GM 6L80/90E is 100% tested with JASPER-designed test equip- ment to verify communication between the computer and all internal inputs including: transmission fluid pressure switches, tem- perature sensor, speed sensors, internal mode switch and solenoids.

Chrysler Penstar
JASPER offers upgrades to the early-style GM 6L80/90E transmission such as a modified stator support shaft with updated 1-2-3-4 and 3-5/reverse seal rings and a notched valve body spacer plate gasket.
Chrysler Penstar
Every JASPER Transmission undergoes dynamometer testing to ensure proper gear ratios, line pressure, cooler pressure and flow, and noise. The TCM, on the GM 6L80/ 90E, is validated using a state-of-the-art CAN software package.
Billet Converter Cover• A billet converter cover is available for all GM 6L80/90 non- captive clutch applications to prevent the front cover from distorting during the converter welding process.

• Early-style stator support shaft is modified for 100% installation of updated 1-2-3-4 and 3-5/reverse seal rings to prevent seal leakage, harsh/delayed shifts, and burnt clutches.

• 100% installation of an updated notched valve body spacer plate gasket on the early-style GM 6L80/90 provides better oiling to the solenoid, which prevents a DTC P0751 code (due to lack of oil to the solenoid).
• The TEHCM (transmission electronic hydraulic control module) is 100% tested using hydraulics and electronics to verify proper operation of the internal mode switch, transmission fluid pressure switches, temperature sensor, speed sensors, and solenoids.

• 100% dynamometer tested for proper gear ratios, line pressure, cooler pressure and flow, and noise. TCM (transmission control module) is validated using state-of-the-art CAN (controller area network) software.

• JASPER offers free rental of a J2534 pass-through device, with transmission purchase, to assist in the reprogramming of the TEHCM and ECM (engine control module) to ensure the latest OEM calibration is installed in the vehicle. J2534 reprogramming will require a subscription fee charged by General Motors.

• JASPER Customers may also purchase the Drew Technologies CarDAQ-M/Mega-CAN Bundle at a discounted price and can use available Co-op funds for up to 50% of the reprogrammer’s cost.
• CarDAQ is the industry standard

• Excellent J2534 reprogramming support

• Unmatched technical support

• Add new modules as you want, when you want

• Designed for high performance and durability

3 Year / 100,000 Mile Nationwide
Transferable Warranty

Full warranty disclosure available at www.jasperengines.com or
upon request. Specifications subject to change without notice.
Download GM 6L80/90E Flyer

Product Videos

GM 6L80/90 DTC P0751Code

6L80/90 Stator Support Shaft Update

GM 6L80/90 transmission

Value-Added Quality Improvements from JASPER

Issue / Concern:

Converter Clutch Shudder

JASPER Solution:

  • A billet converter cover is available for all GM 6L80/90 non-captive clutch applications to prevent the front cover from distorting during the converter welding process.

2-3 Harsh or Delayed Shift, Harsh or Delayed Shift From Park, Harsh or Delayed Shift from Reverse, Burnt 1-2-3-4 Clutch, Burnt 3-5/Reverse Clutch

  • Early-style stator support shaft is modified for 100% installation of updated 1-2-3-4 and 3-5/reverse seal rings to prevent seal leakage, harsh/delayed shifts and burnt clutches.

Check Engine Light (DTC P0751 Code)

  • Early-style GM 6L80/90 includes 100% installation of an updated notched valve body spacer plate gasket to provide better oiling to the solenoid, preventing a DTC P0751 code (due to lack of oil to solenoid).

TEHCM and/or CAN Software Malfunction and Runability Issues

  • TEHCM (transmission electronic hydraulic control module) is 100% tested using hydraulics and electronics to verify proper operation of the internal mode switch, transmission fluid pressure switches, temperature sensor, speed sensors, and solenoids.
  • 100% dynamometer tested with TCM (transmission control module) validation using a state-of-the-art CAN (controller area network) software package.

Reprogramming Hassle, TEHCM Calibrations, and Runability Issues

  • JASPER offers free rental of a J2534 pass-through device, with transmission purchase, to assist in the reprogramming of the TEHCM and ECM (engine control module) to ensure the latest OEM calibration is installed in the vehicle. *J2534 reprogramming will require a subscription fee charged by General Motors.
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