Find the exact engine for your vehicle

Pick your vehicle and we'll match the exact unit — or text your VIN and skip the form.

Don't see your vehicle? Text your VIN to +18886219120 — a real person replies in under 2 minutes.

Tested · Photographed · Warrantied

2020 GMC Sierra 1500 Transmissions for Sale

No stock photos. No guesswork. No untested gambles.

Need a used transmission for your 2020 GMC Sierra 1500? Every unit is matched to your VIN, tested, and photographed for your approval before it ships — up to a 3-year warranty, complete and ready to install, with free US shipping. Text your VIN for an exact-fit quote in under two minutes.

Up to 3-yr warranty VIN-matched fit Photos before ship Free US shipping
1,900+
units ready to ship
50 states
free US shipping
2 min
average quote reply
3-year
max warranty

What families we cover

8/10-Speed Automatic

8/10-Speed Automatic

Modern multi-speed auto.

6-Speed Automatic (6L80)

6-Speed Automatic (6L80)

RWD truck automatic.

BEFORE WE SHIP

Real photos of your actual unit — you approve first

After you order, we dismantle, inspect, and photograph the exact unit you bought — multiple angles plus the data plate — and send them to you for approval before we ship. Don't like what you see? Full refund, before anything leaves our shop.

Plug-and-play — complete, ready to install

Order an engine and you get the full long-block assembly — every external component your installer needs to bolt it in and fire it up. No chasing down missing parts, no surprises when the crate opens.

✓ Block & head✓ Intake manifold✓ Exhaust manifold✓ Timing chain/belt✓ Oil pan✓ Valve cover✓ Sensors✓ Wiring harness✓ Fuel rail & injectors✓ Accessory brackets✓ Turbo (if equipped)

What other sellers leave out: many ship a bare block, or pull the valve body or torque converter separately. With Pro Drive it arrives complete and ready.

What we do — that they don't

What you get
Pro Drive
Typical seller
Before it ships
✓ Real photos of your unit, you approve
✗ Stock photo, sight unseen
Testing
✓ Run & compression-tested
✗ Sold untested, as-is
Fitment
✓ VIN-verified & guaranteed
✗ You guess the fit
In the crate
✓ Complete assembly, ready to bolt in
✗ Bare block, parts pulled
Sourcing
✓ Front-intact donors only
✗ Any salvage, flood or fire
Warranty
✓ Up to 3 years
✗ 30–90 days, if any
Shipping
✓ Free, palletized, 50 states
✗ $200–500 extra

From your VIN to your driveway

1

Text your VIN

Or pick your car

2

We verify fit

Matched to your VIN

3

Order & we photograph

Your actual unit, dismantled

4

You approve photos

Then we ship — or refund

5

Shipped free

Palletized, all 50 states

6

Backed by warranty

Up to 3 years

Common questions

Will it fit my exact 2020 GMC Sierra 1500?

Send your VIN — we match the code before anything ships. If a verified part doesn't fit, we cover return shipping and make it right, or refund you in full.

What's actually included?

The complete assembly — every external component your installer needs, not a bare block or a stripped case.

What warranty do I get?

From 6 months on standard units up to a full 3-year warranty on premium, low-mileage stock. The exact term shows on each product.

Can I see photos before I pay?

Yes — we photograph your actual unit and send them for your approval before it ships. Don't approve, don't pay.

How long until it arrives?

Usually a few business days to prep and ship, then a couple of days in transit by freight.

What if it fails after install?

If a covered unit fails, we ship a replacement free — no core charges, no hidden fees.

My part isn't listed — can you still find it?

Almost certainly. Our network runs far deeper than the site. Text your VIN and we'll source it.

Every order is fully protected

Up to 3‑year warranty

From 6 months to a full 3 years on low‑mileage stock.

30‑day money‑back

Not as described? Full refund, no restocking fees.

Free replacement

If a covered unit fails, we ship another free — zero fees.

Don’t see your year? Text your VIN — we match it free.

Text your VIN
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Showing 12 of 29 units
2020 GMC Sierra Denali 3500 Used Transmission (AT), GasolineTrans

2020 GMC Sierra Denali 3500 Used Transmission (AT), Gasoline

From $3,18911 in stock
2020 GMC Sierra Denali 3500 Used Transmission (AT), Diesel, ID OMKFTrans

2020 GMC Sierra Denali 3500 Used Transmission (AT), Diesel, ID OMKF

From $5,47913 in stock
2020 GMC Sierra Denali 3500 Used Transmission (AT), Diesel, ID OMEFTrans

2020 GMC Sierra Denali 3500 Used Transmission (AT), Diesel, ID OMEF

From $5,7899 in stock
2020 GMC Sierra Denali 2500 Used Transmission (AT, 6.6L), 6 SpeedTrans

2020 GMC Sierra Denali 2500 Used Transmission (AT, 6.6L), 6 Speed

From $3,17910 in stock
2020 GMC Sierra Denali 2500 Used Transmission (AT, 6.6L), 10 Speed, ID OMKFTrans

2020 GMC Sierra Denali 2500 Used Transmission (AT, 6.6L), 10 Speed, ID OMKF

From $5,4895 in stock
2020 GMC Sierra Denali 2500 Used Transmission (AT, 6.6L), 10 Speed, ID OMEFTrans

2020 GMC Sierra Denali 2500 Used Transmission (AT, 6.6L), 10 Speed, ID OMEF

From $5,6897 in stock
2020 GMC Sierra Denali 1500 Used Transmission (AT), 4X4, 6.2LTrans

2020 GMC Sierra Denali 1500 Used Transmission (AT), 4X4, 6.2L

From $3,27913 in stock
2020 GMC Sierra Denali 1500 Used Transmission (AT), 4X4, 5.3L, 8 Speed ( Opt MQE )Trans

2020 GMC Sierra Denali 1500 Used Transmission (AT), 4X4, 5.3L, 8 Speed ( Opt MQE )

From $3,37912 in stock
2020 GMC Sierra Denali 1500 Used Transmission (AT), 4X4, 5.3L, 10 Speed ( Opt MQB )Trans

2020 GMC Sierra Denali 1500 Used Transmission (AT), 4X4, 5.3L, 10 Speed ( Opt MQB )

From $3,28911 in stock
2020 GMC Sierra Denali 1500 Used Transmission (AT), 4X4, 3.0LTrans

2020 GMC Sierra Denali 1500 Used Transmission (AT), 4X4, 3.0L

From $3,9797 in stock
2020 GMC Sierra Denali 1500 Used Transmission (AT), 4X2, 5.3LTrans

2020 GMC Sierra Denali 1500 Used Transmission (AT), 4X2, 5.3L

From $3,37912 in stock
2020 GMC Sierra 3500 Hd Used Transmission (AT, 6.6L), Gasoline, 4X4Trans

2020 GMC Sierra 3500 Hd Used Transmission (AT, 6.6L), Gasoline, 4X4

From $3,1899 in stock