Used NP246 (encoder / electronic) for Sale — VIN-Verified.
Tested 4WD & AWD transfer cases for Houston trucks and SUVs — VIN-verified, warrantied, and ready to ship or pick up in Pasadena. 0% restocking, ever.
Used & remanufactured NP246 (encoder / electronic) — VIN-verified, tested, and shipped nationwide from our Pasadena, TX facility. Fits Silverado, Sierra, Tahoe, Suburban, Avalanche.
The NP246 is GM's push-button electronic-shift case. We confirm encoder-motor vs manual and verify tag ID by VIN so your Autotrac 4WD works right. The transfer case is the heart of any 4WD or AWD drivetrain — it splits engine power from the transmission out to the front and rear axles, and when it fails, your Silverado, F-150, Ram, Tahoe, Suburban, Wrangler, or 4Runner drops out of four-wheel drive fast. At Ultra Auto Parts TX in Pasadena, just off Spencer Highway in the Houston area, transfer cases are part of our drivetrain specialty, not a random shelf pull in a 10-acre salvage yard. Every unit is inspected before it leaves the building. As Houston's drivetrain specialist, we source used and remanufactured transfer cases for gas and diesel trucks, full-size SUVs, and crossovers across Pasadena, Deer Park, Baytown, Pearland, La Porte, and the greater Houston metro. We match by VIN and transfer case tag ID so the input spline count, shift type, and transmission fitment are right the first time — bilingual, English or Spanish, with a 10-minute response during business hours.
Known issues we check on the NP246
The NP246 is GM's Autotrac push-button case, and its two signature failures are the encoder motor/position sensor (causing erratic 4WD engagement and service-4WD lights) and pump-rub wearing through the rear case half, which drains fluid and burns the chain. We confirm encoder-motor vs manual and verify the tag ID by VIN, then bench-test electronic shift engagement and chain wear before it ships from Pasadena so your Autotrac 4WD actually works.
Used vs. remanufactured NP246 — which to buy
A tested used NP246 is a value when the encoder motor and pump-rub area check out, and ours are inspected for exactly those failures. Remanufactured makes sense if you want a fresh chain, pump, and reman encoder-motor coverage with a longer warranty. We match tag ID and shift type to your VIN. Send your VIN and we tell you honestly which fits your Silverado, Tahoe, or Suburban.
NP246 specs & applications we source
The NP246 is an active on-demand Autotrac case with a 2.72:1 low range, a 32-spline input, and an internal clutch pack the Transfer Case Control Module (TCCM) modulates through the encoder motor — that is why a failing encoder or TCCM throws the truck into limp-mode 2WD. We source them for 1999-2007 GMT800/GMT900 Silverado 1500, Tahoe, Suburban, and Avalanche with Autotrac. Because the NP246 shares a case with the manual NP243 but is NOT interchangeable, we verify the RPO code and tag before quoting.
Why buy a quality used transfer cases?
A quality used transfer case costs a fraction of new or dealer pricing and, on trucks and SUVs, is often the smartest fix for a failed unit. Because transfer cases are core drivetrain hardware, Ultra doesn't just grab one off a rack — we check chain, gear engagement, and shift function, verify the tag ID, and match it to your VIN so you get a tested unit that actually fits, backed by warranty.
Common signs you need a replacement
Common transfer case symptoms: whining or growling that changes with speed, grinding or clunking, won't shift into or out of 4WD (or pops out), fluid leaks from the rear output or seals, encoder motor / shift motor failure on electronic-shift units, and internal chain stretch causing slack and noise. Once a case starts leaking or grinding, damage compounds — replace before it strands the whole drivetrain.
| Feature | Ultra Auto Parts TX | Typical salvage yard |
|---|---|---|
| Restocking fee | 0% — ever | ~20% |
| Warranty | 6 mo – 3 yr | 6 mo flat |
| Fitment | VIN-verified to your vehicle | Not verified |
| Drivetrain testing | Specialized per component | General salvage |
| Service | Bilingual · 10-min response | Varies |
Quick Quote Fastest lead
Send Name + Phone + Part + ZIP. VIN recommended for exact fitment.
Fitment Flags We Check
- Encoder motor vs manual shift — electronic push-button 4WD vs a floor shift lever are different cases; they don't interchange
- Input spline count must match your transmission output shaft (e.g. 27 vs 32 spline)
- Married vs divorced — bolted directly to the transmission vs mounted separately
- Transmission / transfer case combo — the case must match your exact trans (4L60E, 4L80E, 6L80, etc.)
- Speedometer / VSS provision — some cases have a vehicle speed sensor port, some don't
- Always confirm by VIN plus the transfer case tag / ID number, not just year/make/model
Heavy-duty transfer cases for diesel trucks — such as the NP263XHD and other HD units behind Cummins, Power Stroke, and Duramax builds — are available and matched to your application.
What to send for an exact quote
- VIN (best — exact fitment)
- Year / make / model / trim
- Transfer case tag / ID number
- Electronic (push-button) or manual (floor shift)
- Engine and transmission combo
Every transfer case is backed by our standard 6-month warranty, extendable up to 3 years, plus 0% restocking fee on returns — buy with confidence, no gotchas.
Local delivery around Houston is free with our own drivers; regional runs are a flat charge and out-of-state ships at exact cost — no invented 'free nationwide shipping.'
How It Works
FAQ — Transfer Cases in Houston, TX
Where can I buy a used NP246 transfer case near me in Houston?
Ultra Auto Parts TX carries tested NP246 transfer cases at 5041 Spencer Hwy Ste 101 in Pasadena, near Houston. We provide free local Houston delivery and nationwide shipping, open Monday through Friday 8 to 5 Central, English and Spanish. Call or text 281-436-9991 with your VIN and tag ID.
How much does a used NP246 transfer case cost?
Pricing depends on the tag ID, condition, and encoder-motor health. We do not quote from memory — send your VIN and tag ID to 281-436-9991 for the correct tested unit. Every order carries a 0% restocking fee, so there is no risk if plans change.
How do you verify an NP246 fits my GM truck?
We verify encoder-motor vs manual shift and match the tag ID to your VIN, since the NP246 varies by application. We bench-test electronic engagement and check the pump-rub bore and chain before shipping. Send your VIN to 281-436-9991 to confirm fitment.
Ultra Auto Parts TX is a used and remanufactured drivetrain-parts dealer in Pasadena, TX (Houston metro). 5041 Spencer Hwy Ste 101, Pasadena TX 77505 · (281) 436-9991 · Mon–Fri 8am–5pm CT · Bilingual · 0% restocking · 6mo–3yr warranty.
Looking for a used transfer case in Houston, TX? Ultra Auto Parts TX in Pasadena supplies tested 4WD and AWD transfer cases for Chevy, GMC, Ford, Ram, Jeep, and Toyota trucks and SUVs — NP261, NP263, NP246, NP241, BW4406, and more. As Houston's drivetrain specialist, every used transfer case is VIN-verified and matched by tag ID for correct spline count and shift type, backed by a 6-month-to-3-year warranty and 0% restocking. Free local Houston delivery, bilingual service.