Are there problems with 2001-2002 Allison transmissions?

Enter your ride HERE to be a part of this months Ride of the Month Challenge! I’m looking at a 2002 model with about 42k miles. It looks to be in great shape. My mechanic (who owns the same vehicle in an 03) told me that the 01-02 Allison’s are “notorious” for having problems.

What should the temp of an Allison Transmission be?

How hot should your Allison transmission run? If you own a 2001-2004.5 LB7 Duramax your normal operating temperatures will run around 160-180 degrees. These transmissions will warm up when towing or driving in the summer months. 200-225 is very common when the ambient air temp is 80-100 degrees and your transmission is under an increased load.

What to do if your Allison Transmission goes into limp mode?

Unfortunately, a driver can’t reverse limp mode. If you find yourself stuck in third gear with this model of transmission, it’s probably time to have it rebuilt. Pro Tip: Keep your Allison transmission well-maintained to avoid accidentally triggering limp mode. This will also improve your vehicle’s overall functionality!

Can a Allison trans injector last 100K?

Injectors may not last 100k or even close to it. Some guys fail them at 30k and others at 200k. I wouldn’t worry about the trans, if you do have to rebuild it. Get a performance build from an Allison Guru, your traditional transmission guy won’t be the right guy for this build.

What are the different types of GM transmissions?

Other automatics 1 Aisin AF33 — 5-speed transverse automatic made by Aisin AW Co., Ltd. 2 Allison 1000 Series — 6-speed longitudinal automatic made by Allison Transmission 3 Saturn MP6/MP7 — 4-speed automatic developed by Saturn for use in the S-series from 1991 to 2002 4 VTi transmission — continuously variable transmission

What is the Allison Transmission part number for Duramax?

Neutral safety backup switch issues are another common Allison Transmission problem on the GM Duramax versions. If the D doesn’t light up on your gear indicator, this could be the issue. It is part number 29540479.

What kind of truck is GMC Sierra 8.1L?

I have a 2001 Gmc sierra 8.1L 4×4 and i love it, it has 265,000 km on it and runs like a dream, i have been in the an accident and it held up well. its a very strong truck, i have nothing bad to say about it, other then the gas mileage. lots of fun with lots of power!

What kind of tires does a GMC 2500HD get?

I have an 8.1L in a 2001 GMC 2500HD for several years. The only mechanical issues I have had were a crankshaft position sensor and a shift module on the Allison transmission. I have a stock motor with a K&N Cold Air system, 4.10 ratio, 285/75/16 tires, and a Bully Dog triple tuner. I frequently average 10 mpg combined.

What’s the mileage on an Allison 8.1 diesel?

If it run the motor at a lower RPM than the 4L80 does in 4th gear then its even farther out of the TQ curve. Mine runs about 2200 RPM at 75 MPH. When it kicks down a gear and jumps to 3000 RPM it pulls like a pig. If the ally would put it down at 1800 RPM it would shift even more and likely get worse mileage.

What’s the problem with the Allison Transmission 1000?

What Might be Wrong with Your Transmission 1 Limp Mode (Allison 1000 Model) The Allison transmission 1000 model has a feature called “limp mode”, in which the… 2 Hooked Up Incorrectly It’s also possible that the transmission itself is just fine, but was installed incorrectly. If… 3 TCM Module Recall More

Is there a build it Allison transmission kit?

BD Build it Allison Transmission Kits 01-10 6.6L GM Duramax Allison Trans BD-1062204-main 0.00 BD-Power 1062204 For an experienced builder these kits can be a big money saver as you will not have to deal with core charges and can save over $400 in freight charges!

Are there any torque converters for the Allison Transmission?

However, for those simply wanting to “tweak” the Allison, we do offer BD, ATS, AFE, and Banks performance torque converters, Mag-Hytec, AFE, and ATS transmission pans, TS lockup controllers, and much more! As always, if you are unsure of what’s right for you, call or e-mail us at [email protected] and we’ll be glad to help you decide.

What should the transmission temp be in a Duramax?

If you own a 2001-2004.5 LB7 Duramax your normal operating temperatures will run around 160-180 degrees. These transmissions will warm up when towing or driving in the summer months. 200-225 is very common when the ambient air temp is 80-100 degrees and your transmission is under an increased load.

What’s the max weight towed with a 2002 Chevy 2500HD?

The weight distribution hitch limit is the truck’s rated bumper-pull towing capacity with a weight distribution system. The fifth wheel and gooseneck limit is probably 15,300.

Is the Duramax Allison 1000 a manual transmission?

Rather than becoming outdated, the Allison has evolved to match the performance characteristics and demands of the Duramax turbodiesel, which has undergone significant changes itself through the years. Manual transmissions are relatively rare for Duramax powered GMC/Chevrolet pickups, the primary reason being the attractiveness of the Allison 1000.

What kind of transmission does GM 6.6L LB7 have?

Ideal for maintaining a factory ride, this part has a stock fit and finish.Features:Factory Fit & FinishMade to Stringent SpecificationsConstructed From Quality Materials The Allison 29540479 NSBU (Neutral Start Back Up) Switch is an OEM replacement for the faulty NSBU switch in your 2001-2004 GM 6.6L Duramax LB7.

When did General Motors buy the Allison Transmission Company?

Acquired by General Motors in 1929 following the death of the company’s founder, Allison’s history includes the development of propulsion systems for aircraft and other military applications prior to the end of the WWII. GM sold Allison Transmission in 2007, although Duramax powered pickups continue to use their transmissions.

What kind of trailer does a GMC Sierra 3500 need?

Requires Sierra 3500 HD Regular Cab Long Bed 2WD DRW with available Duramax 6.6L Turbo-Diesel V8, Max Trailering Package and gooseneck hitch. Before you buy a vehicle or use it for trailering, carefully review the Trailering section of the Owner’s Manual.

What kind of transmission cover for GM 6.6L Duramax?

The Fleece FPE-ALL-PTO-CVR Allison 1000 Billet PTO Covers is a great was to dress up your old rusted PTO cover on your 2001-2018 GM 6.6L Duramax. This kit will add rigidity to the transmission case and features billet covers, gaskets, and utilizes button head bolts to give the covers an even cleaner look.

Which is the best Trans fluid for Allison 6spd?

Getting ready to put trans go kit in my 08 Sierrra and want to put in the best fluid. Any help would be appreciated. Any brand Allison approved TES 295 ATF is “best”. Quick question for you guys, is there an additive that must be present in the Allison transmissions that require a certain fluid to be used?

What kind of engine does GMC Sierra 2500HD have?

Recent Arrival! 2002 GMC Sierra 2500HD SLE AT-HOME DELIVERY AVAILABLE, ONLINE PRE-APPROVAL, SIGHT UNSEEN APPRAISALS, Passed Dealer Safety Inspection, Duramax 6.6L V8 Turbodiesel, 5-Speed Automatic with Overdrive, 4WD.

Where did the 2001 GMC Sierra 2500HD come from?

1st owner purchased on 08/30/02 and owned in TX until 09/29/03 • 2nd owner purchased on 09/29/03 and owned in PA until 02/29/08 • 3rd owner purchased on 03/07/08 and owned in PA until 05/31/21. 1st owner drove an estimated 21,037 miles/year • 2nd owner drove an estimated 12,194 miles/year • 3rd owner drove an estimated 3,568 miles/year.

What kind of engine does a 2001 GMC Sierra have?

Description: Used 2001 GMC Sierra 2500HD SLE with Towing Hitch, AWD/4WD, Upgraded Engine, 8ft Bed, Extended Cab. RECENTLY ARRIVED ON OUR LOT IS THIS ONE OF A KIND, LOCALLY TRADED 2001 GMC SIERRA 2500HD SLE.

When was the GMC Sierra 2500HD last serviced?

Purchased on 08/30/01 and owned in VA until 04/09/21. Driven an estimated 6,637 miles/year. Last serviced at 2 miles 08/03/01 • Vehicle serviced • Pre-delivery inspection completed • Emissions or safety inspection performed. No accident or damage reported to CARFAX. Purchased on 06/07/01 and owned in VA until .

What kind of pulling power does an Allison 8.1L have?

TM has little to do with pulling power, mostly for the transmission shifting and smoothness. In defense of the 8.1L, it is a decent long life engine that gave reasonable pulling power for Suburbans and pickups in the gasser class. Mine had the famous CSK and oil consumption even though it was pampered from the beginning.

How long does an 8.1L Allison Engine last?

Yeah, torque and HP curves are dramatically different between naturally aspirated gas engines and forced air diesels. What you describe seems pretty typical for the 8.1. If the pickup is still in good shape and engine isn’t using a lot of oil and dying, I would just keep it. The 8.1 and Allison combination should last a long, long time.

What should I do if my Allison won’t shift?

There is another speed sensor at the back of the Allison– same part as the TC sensor.. might put the old one there and test drive it. Be sure you also check for damaged wires. If the display works OK when shifting gears, the NSBU switch may be OK.

Is the GMC Duramax Trans won’t shift?

Enter your ride HERE to be a part of this months Ride of the Month Challenge! Alright guys I’ve got an 04.5 LLY and after sitting for 2 or 3 days went to drive it and it clunks real hard into reverse and drive.

What causes transmission problems on GMC Kodiak Allison?

The Allison repair tech showed me the tiny piece of metal that caused all the problems. It was about the size of half a small sewing needle. The tech said they had seen a fair number of tannys come in with intermittent shifting problems that went away but came back later. It took a night shift tech to find the problem.

What kind of transmission does an Allison AT545 have?

USED AT545 ALLISON AUTOMATIC TRANSMISSION, COMPLETE, OIL INSPECTED IN GOOD CONDITION, ALSO MANY TRANS IN STOCK. Fits To: FORD, FREIGHTLINER, GMC, INTERNATIONAL / 122SD, 3800, BUSINESS CLASS M2 100, BUSINESS CLASS M2 106, BUSINESS CLASS M2 112, CASCADIA 113, CASCADIA 125, CASCADIA 125 EV…

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