Transmission Upgraded Rebuild Reprogramming Kit Fits for Chevy GMC Hummer 1991-Up 4L80E 4L85E Models, Replaces 4L80EHD2, 4L80E-HD2

Specification: Type: Transmission Reprogramming Kits Fitment Type: Direct Replacement Transmission Type: 4L80E, 4L85E Years: 1999-2009 Manufacturer Part Number: 4L80EHD2, 4L80E-HD2 Fitments: Fits for 1991-On 4L80E & 4L85E Models Package Included: 1 x Heavy duty intermediate case snap ring 2 x Accumulator valve springs, end plug and O-ring Actuator filter tapered plug, O-ring, spring and end plug Relief valve system plate, valve, spring, e-clip and nuts Laminated triple separator plate Valve body and accumulator body gaskets 2 x Drill bits 3rd accumulator spring hardened boost valve and bushing Pressure regulator valve spacer, washer, springs and snap ring New stronger 4th feed bolt and washer 1-2 accumulator spring 16 x Direct clutch return springs

• Manufacturer Part Number: 4L80EHD2,4L80E-HD2.
• Fitment: This 4L80E-HD2 Upgraded Transmission Reprogramming Kit Fits for 1991-On 4L80E 4L85E Chevy GMC Hummer.
• Functions: This New Reprogramming Kit includes valve body, pump and internal components that are calibrated to work in concert with an elevated line pressure curve that will greatly improve the overall durability and shift feel of the transmission. The Reprogramming Kit can increases line pressure on accumulator valve body. Allows you to select how firm you want your shifts.
• Practical Application: The boost valve assembly is notorious for wear causing both low pressure as well as runaway boost pressure. With the low boost pressure problem, the resulting complaints are a soft 2-3 shift, direct clutch failure as well as the gear ratio and solenoid performance codes. On the other hand, the runaway boost pressure problem can result in a costly broken case, direct drum and piston failure.
• Superior Quality: Made of quality materials that meet OEM standards, stable and reliable performance, perfectly restore the original functions, and ensure long-term use.