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4 Speed 4l80e Reprogramming and Shift Kit
This 4L80E Diesel Performance Reprogramming Kit fits all Hummer H1 and HMMWV vehicles equipped with 4L80E and 4L85E automatic transmissions. Common complaints on these transmissions are no upshifts, soft 2-3 shifts, burnt direct frictions, broken hard parts as well as gear ratio and solenoid performance codes.
The boost valve assembly is notorious for wear causing both low pressure as well as runaway boost pressure. With the low boost pressure problem,...
This 4L80E Diesel Performance Reprogramming Kit fits all Hummer H1 and HMMWV vehicles equipped with 4L80E and 4L85E automatic transmissions. Common complaints on these transmissions are no upshifts, soft 2-3 shifts, burnt direct frictions, broken hard parts as well as gear ratio and solenoid performance codes.
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.
Features and benefits:
The 4L80E Performance 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. Also, the laminated triple separator plate provides dual feed for the 3rd gear clutch without having to dismantle the transmission. Dual feeding the 3rdgear clutch triples the torque capacity of the 3rdgear clutch which is the Achilles heel of this transmission. In addition, the included highly improved wide land design boost valve and bushing resists wear so that pressure regulation functions consistently for the long haul. Lastly, the EPC boost pressure relief valve system provided helps protect against accidental runaway boost pressure to stop the case and direct drum failure.
Corrects/Prevents/Reduces:
- High pressure parts breakage
- Soft 2-3 shift
- Burnt direct clutch
- Slow 3-2 downshift
- No upshifts
- Harsh 1-2 shift
- Low pressure due to solenoid filter breakup
- Codes 39, 68, 85, 86, 87, P0731, P0732, P0733, P0734, P0751, P0756, P0894 and P1870
Includes:
- Heavy duty intermediate case snap ring
- (2) 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) Drill bits
- 3rd accumulator spring
- USA-made 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) Direct clutch return springs
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unopened or unused, with tags, and in its original packaging. You'll also need the receipt or proof of purchase.
To start a return, you can contact us at info@sabarh1.com. Please note that returns will need to be sent to the following address: SABAR H1, 585 E. Gainsborough, Thousand Oaks, CA 91360
If your return is accepted, ship us the item to SABAR H1, 585 E. Gainsborough, Thousand Oaks, CA 91360. If you prefer, we'll send you a return shipping label with the price of shipping deducted from your order, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.
You can always contact us for any return question at info@sabarh1.com.
All Approved returns are subject to 20% restocking fees.
The following are not eligible for returns, order cancellations and refunds once the order fulfillment is in progress:
-Special order parts (Not normally in our inventory)
-Custom Configurations or Colors
-Modifications to standard products
Returns and Refunds for items for in-house service work are subject to same approval process.
To be eligible for a refund, the item(s) must be unused and in the new condition. Original, undamaged packaging is required
The following are not eligible for returns, order cancellations and refunds once the order fulfillment is in progress:
-Special order parts (Not normally in our inventory)
-Custom Configurations or Colors
-Modifications to standard products
-Downloadable software products
-Used Parts
-sale items
There are certain situations where only partial refunds are granted: (if applicable)
-Any item not in its original condition, is damaged or missing parts for reasons not due to our error.
-Any item that is approved to be returned more than 30 days after delivery under special circumstances.
Damages and issues
Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if
you receive the wrong item, so that we can evaluate the issue and make it right.
Exceptions / non-returnable items
Certain types of items cannot be returned, like used goods and custom
products (such as special orders or personalized items). We also
do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have
questions or concerns about your specific item.
Unfortunately, we cannot accept returns on sale items or gift cards.
Exchanges
The fastest way to ensure you get what you want is to return the item you have, and once the return is
accepted, make a separate purchase for the new item.
Refunds
We will notify you once we've received and inspected your return, and let you know if the refund was approved or
not. If approved, you'll be automatically refunded on your original payment method within 10 business days. Please
remember it can take some time for your bank or credit card company to process and post the refund too.
If more than 15 business days have passed since we've approved your return, please contact us at
info@sabarh1.com.
All online orders will generally be processed and shipped within 2-3 business days. Exceptions are for items that are custom built, custom ordered, or temporarily unavailable. Questions about your order status? Contact Us!
Orders can be delayed from shipping for a number of reasons. Most products we offer are actively stocked and ship quickly but some, such as our custom Methanol Injection Kits, are hand-built in our facility and can see extended waiting times. Hood lifts are assembled and shipped as quickly as possible and in the order that requests are received. Concerns? Contact Us!
All items are shipped in the safest, most reasonable method possible to ensure safe and timely delivery. Arrival time generally takes 3-7 business days within the USA depending on location.
Once your items are shipped a tracking number will be automatically provided to you via email and a link to track the order will be included. Didn't receive tracking? Contact Us!
We offer a full 30-day refund policy. Any item, unless otherwise stated in the item description or any conversation with our representatives, can be returned within 30 days so long as it is 100% unused and is returned in all original packaging. All returns are subject to a 20% restocking fee unless otherwise stated in the item description or by your sales representative. Click here for our full refund and return policy.