Garage Customer Service Center
Back to Main Menu
Customer Service Center

Free Shipping on All Orders over $99! *UPS Ground    Shop Now

Buy Now, Pay Later with PayPal "Pay in 4"    Shop Now

Now Hiring!    Join The RANDYS Team!

Shop by Category
My Account
Hello, Sign In

NV3500 Manual Transmission for GM 98-05 S10, S15 & Sonoma 4.3L, 5 Speed, External Slave | RMT290C-15 | RANDYS Worldwide

Product Details

Zumbrota Drivetrain Manual Transmissions are rebuilt to the highest quality standards using a 3 step inspection process. Step 1 is a pre-inspection for case cracks, excessive wear, and OEM specific problems. Step 2 measures component parts to ensure OEM specifications are met. Step 3 ensures each unit is built to our exacting quality standards. Shaft straightness, gear wear & synchronizers are extensively tested to meet OEM specs. Seals are replaced and units are dyno-tested for operation, shiftability, and noise level. Unrivaled standards are set for unit precision and reliability at all critical touchpoints. Then an exclusive hydro-blast rinse & sandblasting procedure on internal and external parts, followed by proprietary shot-enticed deep cleaning, sets the standard for manual transmission remanufacturing. All Zumbrota manual transmissions include a 2 year unlimited mileage warranty.

  • Quality inspections are conducted 3 times during the remanufacturing process
  • A pre-inspection is done to ensure the unit is free of case cracks, excessive wear and to catch other OEM related problems that many cores have
  • A second inspection is conducted during the reman process to ensure all component parts meet OEM specifications
  • A final post-build inspection is done to ensure unit is built to our strict standards
  • 100% inspection of internal parts, including gear wear checks, mainshaft straightness test and synchronizer testing.
  • All transmissions are dynometer tested and ran through numerous real life scenarios.

Technical Notes

A refundable core charge will be added to the purchase of the product.

Warranty Information

2 year unlimited mileage warranty against manufacturer defects


Brand Zumbrota Drivetrain
Keywords ***SEE,2WD,2WD,3500,4.3L,4.3L,400-02397A,400-2397A,5SPD,5SPD,90,90,93,93,BELL,CYLINDER,EXT.,GM,GM,INTEGRAL,JIMMY,JIMMY,M/T,M/T,NOTE***,NV,NV3500,NV3500,RMT,RMT,S10,S10,S15,S15,SLAVE,SON,SONOMA,T290C-15,T3500C-5,TRANSMISSION
Technical Notes A refundable core charge will be added to the purchase of the product.
UPC 883584748458
ProxyNumber 74845
Width 27.00 in
Length 42.00 in
Depth 26.00 in
Weight 150.0000 lb


First, let’s consider a rebuilt transmission. In most cases, a vehicle experiencing transmission problems is brought to an automotive repair shop. There, the transmission is removed and worked on by a mechanic who completely disassembles the transmission all the way down to its component nuts and bolts.

The mechanic inspects and cleans each and every transmission component and determines which parts are in working order, excessively worn, or just plain damaged beyond repair. Parts deemed worn or damaged are replaced with new or “used” components, and the unit is then reassembled. Once completed, the transmission is reinstalled and the vehicle is ready to hit the road. In this scenario, the transmission has been “rebuilt” – repairs have been made, bad parts have been replaced, but the unit has received few, if any, upgraded components.

A remanufactured transmission is basically the same as a rebuilt transmission, but the work has been performed by a dedicated transmission repair facility or shipped to the original transmission manufacturing facility. By opting for a transmission remanufacture, the customer is assured the transmission is being repaired by absolute experts on that particular transmission and has been remanufactured to incorporate all design and component upgrades that weren’t available when it was originally manufactured. This example also applies to transfer cases and differentials.

For vehicles made after 1995 it’s recommended to look in your owner’s manual for part number and description. If using non-OE oil, make sure the fluid you use states that it is a direct replacement for the OE part number. If the fluid meets or exceeds OE specs but does not cross to the OE number, do not use IT  and look for one that does.

High stress driving will repeatedly increase the temperature of your transmission, eventually breaking down the stability of the gear oil in your car. If you regularly tow, drive in low traction conditions, or drive in mountainous regions, you will likely need to change your gear oil every 30,000 miles, or potentially even less.

In normal driving conditions, most cars can travel up to 80,000 miles before needing a gear oil change. However, this number is a maximum, and most manufacturers recommend changing your gear oil between 50,000 and 60,000 miles.

Other conditions that require a gear oil change can develop under unusual circumstances. For example, if your transfer case, differential component, or transmission has experienced submersion in water or another foreign fluid, your gear oil should be replaced. Contaminated oil can seriously damage your gearbox, transfer case, or differentials with inadequate lubrication.

You should also replace your gear oil if your transfer case or differentials recently had a leak repaired. A leak could signal contamination or low levels of gear oil. Most mechanics will replace your gear oil after repairing a leaky component, but this is sometimes forgotten during home repairs.

Lastly, if you or your mechanic finds dirty gear oil during a checkup, it should always be replaced. Old or dirty oil leads to destabilized viscosity and poor lubrication, which will prematurely damage your gearbox, transfer case, and/or differentials.

Brand: Zumbrota Drivetrain

NV3500 Manual Transmission for GM 98-05 S10, S15 & Sonoma 4.3L, 5 Speed, External Slave


0 in stock

Get notified when this product is back in stock. Enter your email and click Notify Me below.

0 in stock

Product Price includes core charge of $1,000.00
Core Return Instructions
Warehouse Availability
  • CA 0
  • KY 0
  • MN 0
  • TX 0
  • WA 0

0 reviews for RMT290C-15

Add a review

Your email address will not be published. Required fields are marked

Your rating *

* Please tell us about your experience with NV3500 Manual Transmission for GM 98-05 S10, S15 & Sonoma 4.3L, 5 Speed, External Slave
* Your name will be published with your review
* Your email will remain private