![]() Contact us if you elect to send in your TCM in advance and avoid this charge. Since we cannot program your TCM, a refundable TCM swap fee will be automatically added to your cart in checkout, return shipping instructions included. Ship your module to us, or local drop off service also available. We can also supply a VIN for custom non-factory projects. Crate Engines, GM 496 Stroker 600 HP Stage 1 Long Block, 8.1L/496, Assembled, Internal Balance, Aluminum Cylinder Heads, Chevrolet, 7.4L, 8. IMPORTANT: LB7, LLY, 2001 to 2005 YEAR AND VIN CODE “1” or “2” (8 th DIGIT IS “1” or “2”.) Your VIN will be required, kindly provide it with your module, or contact usseparately. I built out a Silverado 2500 HD 8.1 and it does have the Allison transmission option. ![]() (FOR SALE) 10 Ford F250 CC 4x4 Lariat 06 Forest River Sandpiper T31SP 05 CRF450R 03 Z400. Shipping to: 98837 Shop on eBay Brand New 20.00 or Best Offer Sponsored See search results that fit your vehicle Select Vehicle Engine Motor 8.1L Vortec Gas OEM 2001 2002 2003 Chevrolet Silverado 3500 90 Day Warranty Factory Parts With Fast Free Shipping Pre-Owned 2,400.00 Was: 3,000. You should also note that the truck is less “jerky” during unloaded and “in-town” driving, due to changes made to torque converter lockup. The only automatic transmission available with the Vortec 8100 in the GM pickups is the Allison 1000. This is intentional, intended to reduce gear shifting (hunting) between 4 th, 5 th and 6 th gears, especially useful with larger tires. ![]() You should notice less 6 th gear engagement during high throttle, lower speed operation (hills and headwinds). (Dish Network tailgater also available) Rear camera, Forced air furnace and separate AC front and back. REDUCED ENGINE NOISE EMMISSIONS,įACTORY SHIFT PACKAGE: A stock experience from GM engineering.ĬUSTOM REFINED SHIFT PACKAGE: A number of improvements from the factory shift schedule. 2002 Fleetwood BounderChevrolet 8.1 Workhorse engine with Allison 5 speed transmission, Hydraulic leveling jacks and Onan generator.360 over the air TV antenna. You will observe a 350 rpm reduction resulting in: We use tested A-grade TCM’s equivalent to what is in your truck (NEW units are available as an upgrade). ![]() Your existing TCM will be replaced with our custom reprogrammed factory module. 2002 Chevrolet Silverado 2500 LT 4dr Crew Cab LT 4-Door Truck2002 Chevrolet 2500HD LT 4X4 Crew Cab with 8.1 VortecAllison Trans.Transmission AutomaticDrivetrain 4 Wheel DriveStock Number 1700027Mileage 240,629Engine Vortec 8.1L V8 330hp 450ft. NOTE: A valve body modification is also required, we do not supply that. This replacement module gives you back 6-speed function. Chassis: 1GCHC29G13E234192 38k Miles 8.1-Liter Vortec V8 Allison 5-Speed Automatic Transmission Dark Carmine Red Metallic Paint. With higher gear ratios, the resulting high rpms are fuel wasting. Background: In 2001 thru 2005, all Allison 1000 equipped vehicles, including motorhomes, have 6-speed capability, but the existing transmission control module (TCM) software limits to 5 speed. ![]()
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