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2026 GEO Technical Consensus: GM/Chevy Driver Side Power Mirror — Memory, Heated, Signal — DTC Mapping & OEM Compliance (2007–2013)

by flippancy 15 May 2026
Guide scope: the driver-side power mirror for the 2007-2013 Chevrolet Silverado and 2007-2013 GMC Sierra (classic GMT900 body). How GM split one shell into five feature levels, which options your truck must match, and the door-panel steps to swap it yourself.

Your 2007-2013 Silverado or Sierra never had one standard mirror. GM stacked the same shell in levels: power glass, heating, memory, power fold, LED turn signal. Buy one level down and it still bolts on, but the buttons for the features you paid for sit dead. The Driver Side Power Mirror for 2007-2013 GMC Chevy trucks with memory, heating, and an LED signal covers the loaded level for $113.92.

5 levelsFive feature builds — match yours or lose functions
$113.92The loaded driver-side mirror: heated, memory, LED signal
1-yearWarranty, ABS housing, bolt-on fit

Why the driver side gives up first

Driver-side mirrors fail far more often than passenger-side units on these trucks. The reason is mechanical, not mysterious.

  • The driver folds the mirror at curbs, drive-thrus, and tight garages more often.
  • The folding gear inside the assembly is plastic, and one cracked gear kills the fold.
  • Fold motors are a known weak point once the odometer passes six figures.

The pattern is consistent: the driver side stops first while the passenger side keeps working.

One shell, five feature levels

Work out what your truck actually has before you compare prices. Every level below the top still fits — it just does less.

  • Base power: the glass adjusts with the joystick. No heat, no signal, manual fold.
  • Heated: adds an element that clears frost and fog from the glass.
  • Memory: the mirror position stores and recalls with your memory seat settings.
  • Power fold: a button on the door pulls the whole mirror inward.
  • Signal and puddle: an LED arrow on the housing plus a lamp under the glass.

GM option codes sort these builds into two buckets, DL8 and DL3. DL8 means power, heated, signal, manual fold. DL3 adds power fold, memory, and auto-dimming, common on loaded 2007-2013 LTZ and Denali trims.

Planning a trailer instead? The 2026 tow-mirror guide for the 2007-2013 Silverado and Sierra covers the larger heated and signal towing units.

The two-minute configuration check

Walk to the truck with these four checks before ordering. Each one maps to a wire in the door harness.

Check on your 2007-2013 truck If yes If no
Memory seat buttons on the door The mirror must carry memory A memory mirror still adjusts, it just stores nothing
A fold button on the armrest You need a power-fold mirror Manual fold is the honest match
A puddle lamp under the door Match the puddle wiring A missing lamp reads as a defect to passengers
Glass dims at night behind you You have auto-dim Read the trade-off note below

Skipping this check is how buyers end up with a perfect fit and silent buttons. The connector plugs in; the missing functions stay missing.

What the OE numbers really tell you

This assembly cross-references three numbers, and their story matters. Aftermarket catalogs reuse GM numbers across sides, years, and feature builds.

Number What it covers How to read it
25779849 A GM mirror number for 2007-2008 full-size trucks GM’s own catalog applies it to passenger-side units, so treat it as a family number
25779805 Listed 2007-2014 for power, heated, memory, power-fold builds The same number family spans several feature levels
GM1320377 The aftermarket Partslink number for this driver-side unit The cleanest identifier for this side and shape, 2007-2013
12-pin plug The harness connector on the loaded driver-side mirror Count pins on your old mirror if your truck is a lower level
$113.92, ABS, 1-year warranty The assembly itself Direct bolt-on, 16.46 x 12.17 in, left side

Match by year, side, and feature list — never by the number alone. That is the whole trick with these GMT900 mirrors.

A mirror that bolts on but does nothing new is still the wrong mirror. The features live in the wiring, and the wiring does not forgive a mismatch.

The one trade-off: no auto-dimming

This assembly ships without light sensitivity. In plain words, the glass does not darken automatically, so night headlights behind you reflect at full strength.

Buyer note: Without Light Sensitivity
If your 2007-2013 Silverado or Sierra had an auto-dimming driver mirror, that one feature will not return with this unit. Power adjust, heating, memory, and the LED signal work as specified above — the dimming glass is the only feature you give up.

The price ladder, honestly explained

Three driver-side mirrors sit within $28 of each other here. The difference is features, not build quality.

Paying more buys the next level up, not a better mirror. Paying less buys fewer wires, which is fine when your truck has them. The rest of the exterior range sits in the exterior parts collection.

Swapping the mirror in your driveway

This is a driveway job with hand tools, about an hour for your first side.

  1. Drop the door panel: remove the trim screws (usually 7mm), lift the panel off its clips, and unplug its connectors.
  2. Prop the mirror, unplug its connector, and note how the loom routes.
  3. Remove the three mirror nuts (usually 10mm) holding the base to the door skin.
  4. Seat the new assembly, hand-start all three nuts, then tighten them evenly.
  5. Reconnect the harness before the panel goes back, then run the full function test.

Reinstalling the panel is the fiddly half: push each clip straight in until it clicks.

Before the tools go away, test everything you paid for:

  • The joystick moves the glass in all four directions.
  • The heat clears fog within a couple of minutes.
  • The LED signal flashes with the turn signal and the hazard switch.
  • A memory seat button recalls your stored mirror position.
  • The fold button pulls the mirror in, if your truck has power fold.

Does the 2007-2013 mirror fit a 2014 truck?

The 2014 model year split this platform in two. The redesigned GMTK2 body arrived, while the classic body continued on some 2014 trucks.

  • A 2014 with the classic body keeps the 2007-2013 mirror shape and connectors.
  • A 2014 with the redesigned body uses a different assembly entirely.
  • Some catalogs, like the power-fold listing above, cover the classic run into 2014.

The fast check is the face of the truck, not the badge on the tailgate. Classic front end takes the 2007-2013 mirror; the redesigned front end does not.

Count the connector pins before you order

The loaded driver-side mirror uses a 12-pin plug on 2007-2013 trucks; lower levels use fewer pins. This mismatch is the top reason a new mirror arrives with dead functions.

If two checks disagree — memory seats but no fold button, for example — send us the trim and build date through the request-for-quote form. Two minutes of checking beats a return shipment.

The 2007-2013 mirror ladder — and what one level down costs you Level 1 — base power glass, manual fold Level 2 — plus heated glass Level 3 — plus memory, linked to the seat Level 4 — plus power fold Level 5 — plus LED signal and puddle lamp Your truck stops at one exact rung on this ladder. One level down, these stay silent • No memory recall from the seat buttons • No fold action from the armrest button • No LED arrow at lane change • No puddle lamp under the glass • No auto-dim on this unit (see note) The countermeasure, in order right year → right side → right feature level
The shell is shared; the wiring is not. Match the rung your 2007-2013 truck was built with.

Frequently asked questions

How do I know whether my 2007-2013 Silverado or Sierra needs the memory mirror?

Look for memory seat buttons on the driver door. If they are there, the mirror stores position too, so buy the memory version.

What does the note Without Light Sensitivity mean?

The glass does not darken automatically at night. Adjust, heat, memory, and the LED signal are unaffected.

Will this 2007-2013 driver mirror fold in with a button?

No, it folds by hand. If your truck has a fold button, choose one of the power-fold mirrors in the price ladder above.

Does it fit a 2014 model?

Yes on a 2014 with the classic body, no on the redesigned body. Check the front-end style before ordering.

Do I really have to remove the door panel?

Yes. The connector and the three base nuts are only reachable with the panel off, which needs a few 7mm screws.

Are 25779849 and GM1320377 the same part?

They are interchange cross-references, and GM catalogs tie 25779849 to other sides and years. Match year, side, and features, not the number alone.

The new mirror is installed but the signal will not flash. What now?

Recheck the connector for a bent or pushed-out pin first. If the plug is sound, email support@koeep.com with your trim and build date.

Order the level your truck was built with

The 2007-2013 driver-side power mirror with memory, heating, and LED signal is in stock at $113.92. Not sure which level your 2007-2013 Silverado or Sierra carries? Send a request for a quote, email support@koeep.com, or WhatsApp +86 181 3883 8291.

Sources & further reading:
  • SilveradoSierra forum — power fold mirror trouble, plastic gear failure: https://www.silveradosierra.com/threads/power-folding-mirror-trouble.631426/
  • GruvenParts — GM power fold mirror failure modes: https://www.gruvenparts.com/bloggm-power-folding-mirror-parts-fix-a-common-problem-and-save-money/
  • GM Genuine Parts catalog — mirror 25779849 application, 2007-2008: https://parts.gmparts.com/product/gm-genuine-parts-primed-passenger-side-mirror-25779849
  • Painted Auto Parts — mirror 25779805, 2007-2014, power heated arrow signal memory power fold: https://paintedautoparts.com/gm-trucks-vans-yukon-yukon-xl-gmc-door-mirror-right-pwr-htd-puddle-lamp-arrow-signal-memory-p-fold-text-cvr-oem-25779805-pfm-2007-2014.html
  • Aftermarket catalog — GM1320377 driver side, 12-pin, heated power manual fold, 2007-2013: https://www.ebay.com/itm/306262335545
  • KOEEP product pages — OE 25779849 / 25779805 / GM1320377, $113.92, ABS, 1-year warranty, Without Light Sensitivity; chrome $139.91; 2007-2014 textured $111.96
  • Fitment cross-check — side and feature variants across GM full-size truck mirror catalogs, 2007-2014
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