Logan Coach horse trailers

Popup Hitch, gooseneck extensions SuperSprings, overloads Centramatic, tire balancers

mrtruck pickup truck reviews

As seen on

"Trailer Towing Education Starts Here"


Since 1999, made in USA

The Truth about Trucks

MrTruck Index

Home Page
Horse Trailer Reviews
Pickup Truck Reviews
Accessory Reviews
Towing Reviews
MrTruck.TV RFDTV Reviews

MrTruck Accessory Store Truck & Trailer Parts

Camper & RV
MrTruck Motors-Classified
Dept of Transport.
Hay Page
Truck News
Insurance Warranties
More Power
Oil & Filters
Recalls, Rebates, MPG
Tires Batteries
SUV Vans that tow
Trailer Basics & More
Truck Basics & More
Truck Safety

MrTruck Store Super Sale


Seven ft. 15 lb. Panels

Travel n corrals mounted on horse trailer

Peace of mind when horse camping


Auto Flex air ride suspensionComplete pickup truck leaf spring replacement with air bag suspension. Self levels, improves ride, braking, steering and handling. AutoFlex Review


Automated Safety Hitch Help for your Rear Truck Axle, an inline dually

Safety Hitch inline dually

Dramatic Trailer Braking & Turning for Safer Towing



Horse Trailer Super Store, shop open until midnight. Selling Cimarron, Logan Coach and Outlaw Conversions

EZ connector trailer wire connectionThis is the reliable weatherproof electrical connection for your trailer.

Logan Coach horse trailers

Strength of Steel Beauty of Aluminum

Whiz Proof Trailer Floors


BIGFOOT Hydraulic Trailer Jacks

Built to Outlast your Trailer, Steel Tank, covered leg

Big Foot steel enclosed foot trailer jack


Actuling electric over hydrauliic trailer brake actuator

DirecLink Trailer Brake Controller using your trucks computer with ABS brakes for your trailer from Tuson, best trailer brakes you can buy

Cimarron horse trailers

Cimarron Custom Aluminum Horse Trailers


Centramatic wheel automatic wheel balancers

Automatic Tire Balancers for Trucks and Trailers

25% to 50% longer tire life, eliminates cupping and tire vibration

Gander lock gooseneck lockGanderLock for Goosenecks: Protect your trailer as well as your expensive saddles, bridles, tools and flat screen TV. Goosenecks if you just lock the coupler, the thief's loosen the set bolts, slide out your adjustable coupler Read the Review
Express corralsExpress Corral Larger corral that goes up in 15 minutes, down in 10. For your trailer and pasture. Comes in a kit with an aluminum storage box. More.

Cattle and Horse Trailers, ask your neighbor

Titan stock trailer

New Polylast Floor video




Saddlematic power saddle rackMotorized Saddle Rack, save your back and shoulders and energy for your horse ride.


Step Above trailer ladderThe Safe heavy-duty trailer ladder you'll use. Read the story...

The Flip-Over Ball gooseneck hitch converts to smooth truck bed in seconds.



Maximum Trailer Braking Power for Serious Towing Trailer Brakes as fast as your Truck Brakes


Newly redesigned PopUp 2 Gooseneck Hitch. More info....


Weight Distributing

Weight Distributing Hitches for safe controlled trailer towing. Reviewing Equal-i-zer WDH Click.


Sulastic Rubber Springs are a cast hinge embedded with rubber. They greatly improve your trucks ride.

 Follow mrtruck on Twitter


New Allison 1000 Transmission Offers Six-Speed Performance and Range Selection Mode

  • First-in-class six-speed automatic transmission with two overdrive gears
  • Engine speed reduced by 250 rpm at 60 mph
  • Enables improved fuel mileage and range
  • First-in-class tap-shift range-selection feature allows driver to easily select desired gears for greater control
  • Part of GM’s rollout of 10 six-speed automatic transmission variants by the end of the decade

PONTIAC , MICH. – The Allison 1000 transmission grows from a five-speed automatic to a first-in-class six-speed automatic for the 2006 Chevrolet Silverado HD and GMC Sierra HD trucks equipped with the Duramax 6600 6.6L V-8 diesel or Vortec 8100 8.1L V-8. Also new for 2006, the Allison 1000 six-speed features a class-first tap-shift range selection function, as well as offering enhanced fuel mileage, quietness and control. The range selection function allows the driver to easily select the desired gears to match driving conditions, such as towing a trailer on a steep grade.

“Changes to the Allison 1000 represent a ‘best of all worlds’ scenario,” said Kevin Wayman, Allison 1000 chief engineer. “Performance, quietness and fuel mileage are all enhanced without degradation to product durability.”


The sixth gear – essentially a second overdrive gear – enables a wide, 5.08:1 overall forward gear ratio coverage and allows the vehicle’s engine to operate at lower rpm, particularly during higher-speed driving on highways and freeways. Its 0.61 ratio sixth gear provides a 1550-rpm engine speed at 60 mph, compared with the five-speed transmission’s 1800-rpm engine speed at 60 mph. The engine uses less fuel at lower rpm, enabling increased fuel mileage and range. The ratios of gears 1 through 5 remain the same as the Allison 1000 five-speed, including the 0.71:1 fifth gear.

A tow/haul mode is retained on the Allison 1000 six-speed, but it is complemented by a new range selection feature. It allows the driver to select the desired gears, via a thumb-activated switch on the shifter, providing a feeling of enhanced control in unique driving situations, such as towing on a steep grade. The range selection feature holds the gear pre-selected by the driver and electronic safeguards prevent the transmission from being shifted in a manner that could cause engine damage or loss of vehicle control. Grade braking and cruise grade braking are only available when the tow/haul mode is selected and the transmission is not in the range selection mode.

Diesel-engine vehicles equipped with the Allison 1000 six-speed feature cruise control grade braking. Working in harmony with the tow/haul mode, the cruise grade braking system will automatically downshift to help maintain the pre-selected cruise speed when driving on downhill grades.

A new low-traction mode also is standard on vehicles equipped with the diesel engine. When the driver selects second gear while stopped and wheel slip occurs, the transmission torque-manages the engine to limit tire slip on slippery road surfaces.

In addition to the sixth gear and range selection feature, the Allison 1000 also benefits from complementary upgrades that include:

  • Upgraded 310-mm torque converter that improves torque capacity
  • New 22-tooth pump that improves NVH
  • New solenoids provide better converter lock-up control and shift feel
  • Upgraded rotating clutch that improves torque capacity
  • New A40, 32-bit transmission control module

The Allison 1000 also has a unique, GM-patented elevated idle mode, which allows for faster interior warm-up of diesel-equipped vehicles. The system, which is activated through the vehicle’s driver information center, is synchronized with the engine. When elevated idle is active, the transmission increases the load on the engine so that it will generate heat more quickly and warm the interior in less time.

In 2004, GM Powertrain announced plans to introduce 10 six-speed automatic transmissions globally by the end of the decade. The introduction of the new Allison 1000 six-speed automatic is another step towards realizing that goal.

Allison 1000 Series Specifications (MW7)

Type: Six-speed rear-wheel-drive, electronically controlled, automatic overdrive transmission with torque converter clutch
Engine range: 6.6L - 8.1L
Maximum engine torque: 650 lb-ft
Maximum gearbox torque: 900 lb-ft
Gear ratios:  
First: 3.10
Second: 1.81
Third: 1.41
Fourth: 1.00
Fifth: 0.71
Sixth 0.61
Reverse: 4.49
Maximum shift speed: 4850 rpm
Maximum validated gross vehicle weight: GVW
12000 lb – 3600 series
11400 – 3500 dually series
9900 – 3500 non-dually series
9200 – 2500 HD series

23500 lb – 3500 dually, 3600 series (6.6L Duramax)
22000 lb – 3500 dually (8.1L), 3600 (8.1L), 3500 non-dually (6.6L Duramax, 8.1L)

6-position quadrant: P, R, N, D, M, 1
Case material: die cast aluminum
Shift pattern: (2) two-way on/off solenoids
Shift quality: force motor control / adaptive shifts
Torque converter clutch: Variable Bleed Solenoid Control
Converter size: 310mm (diameter of torque converter turbine)
Fluid type: DEXRON® VI
Transmission weight: dry: 150 kg (330 lb)
Fluid capacity (approximate): shallow pan: 12L (13 qt.) (dry)
Power take off: provision available
Pressure taps available: main pressure
Assembly sites: Baltimore , Md.
Additional features: Tap-shift range selection mode; elevated idle mode; low traction mode; shift stabilization; tow/haul; grade braking
Applications: 2006 Chevrolet Silverado and GMC Sierra 2500HD and 3500

Your  Online  Pickup Truck, SUV & Trailer  Resource Magazine.

MrTruck's Top Picks, Truck, SUV & Trailer Accessory Store, ENTER

Safe, Secure Ordering, Questions on Internet orders 303-883-1300   We don't share your information