Best GMC Dealerships in Stockton, Ranked by CarEdge Data

This is the CarEdge Dealer Transparency Index ranking for GMC dealers in the Stockton metro. We graded every GMC dealer in the area with enough verified out-the-door quotes to score with confidence — using real PDFs, emails, and signed deals, not Google star ratings.

6 GMC dealers in Stockton currently clear the data threshold. Here’s how they rank.

Last updated October 6, 2026. CarEdge refreshes these rankings daily as new verified out-the-door quotes come in.

The Best GMC Dealers in Stockton

The best GMC dealer in Stockton by verified out-the-door price data is Gmc Of Vacaville (Vacaville, CA): A grade, 95/100 across 4 verified quotes, with no dealer add-ons in any verified quote.

Close behind:

2. Fremont Buick Gmc (Fremont), A grade, 93/100 across 10 verified quotes, with 10 verified out-the-door quotes behind the grade.
3. Elk Grove Buick Gmc (Elk Grove), A grade, 93/100 across 7 verified quotes, with a $85 doc fee, under the CA average of $110.

Full ranking, fees and add-on data for every graded dealer are below.

Top 6 GMC Dealers in Stockton

Ranked by CarEdge transparency score, highest to lowest. Each dealer profile links to the full review with verified out-the-door quotes.

#1 — Gmc Of Vacaville

Grade: A · Score: 95/100 · Vacaville, CA

Gmc Of Vacaville is the top-graded GMC dealer in the Stockton metro by verified data — A grade, 95/100, based on 4 verified OTD quotes.

• Doc fee: $85 — well below the CA average of $110
• Add-ons: None detected in verified quotes
• Listing accuracy: 2.4% above the advertised listing
• Verified quotes: 4

See full review & verified quotes →

#2 — Fremont Buick Gmc

Grade: A · Score: 93/100 · Fremont, CA

Fremont Buick Gmc keeps add-ons on just 10% of verified quotes — light for an A-grade dealer.

• Doc fee: $296 — well above the CA average of $110
• Add-ons: 10% of quotes, avg $200
• Listing accuracy: 0.9% above the advertised listing
• Verified quotes: 10

See full review & verified quotes →

#3 — Elk Grove Buick Gmc

Grade: A · Score: 93/100 · Elk Grove, CA

Elk Grove Buick Gmc quotes prices within 0.9% of the advertised listing — one of the cleanest pricing patterns on this list.

• Doc fee: $85 — well below the CA average of $110
• Add-ons: 29% of quotes, avg $413
• Listing accuracy: 0.9% below the advertised listing
• Verified quotes: 7

See full review & verified quotes →

#4 — Mataga Buick Gmc

Grade: B · Score: 88/100 · Stockton, CA

Mataga Buick Gmc earns a solid B on verified data — solid fundamentals. The one watch-out: add-ons show on 50% of quotes (avg $1,009).

• Doc fee: $117 — above the CA average of $110
• Add-ons: 50% of quotes, avg $1,009
• Listing accuracy: 1.0% below the advertised listing
• Verified quotes: 8

See full review & verified quotes →

#5 — Lehmer’s Concord Gmc

Grade: B · Score: 84/100 · Concord, CA

Lehmer’s Concord Gmc grades a B: a doc fee at or below the CA average, but add-ons show on 71% of quotes (avg $796) — ask for an itemized OTD.

• Doc fee: $85 — well below the CA average of $110
• Add-ons: 71% of quotes, avg $796
• Listing accuracy: 1.9% above the advertised listing
• Verified quotes: 7

See full review & verified quotes →

#6 — Folsom Buick Gmc

Grade: F · Score: 50/100 · Folsom, CA

Folsom Buick Gmc is the lowest-graded GMC dealer in the Stockton metro by verified data. Verified quotes show a pattern of below-average transparency. Bring data and be ready to walk.

• Doc fee: Not available
• Add-ons: 40% of quotes, avg $1,027
• Listing accuracy: 4.4% below the advertised listing
• Verified quotes: 5

See full review & verified quotes →

Limited Data

These GMC dealers in the Stockton metro have verified OTD data, but not yet enough to assign a confident grade. We’re actively collecting more quotes for these dealers.

• Alfred Matthews Gmc (Modesto, CA) — based on 2 verified OTD quotes. View dealer page
• Bonander Gmc (Turlock, CA) — based on 1 verified OTD quote. View dealer page
• Thompson Buick Gmc (Patterson, CA) — based on 1 verified OTD quote. View dealer page
• Dublin Buick Gmc (Pleasanton, CA) — based on 3 verified OTD quotes. View dealer page

About the CarEdge Dealer Transparency Index

Most dealer rankings come from Google star ratings and Yelp reviews — easy to game, impossible to verify. The CarEdge Dealer Transparency Index is different. We score every dealer using verified out-the-door quotes: real PDFs, emails, and screenshots from actual transactions.

Each dealer’s transparency score (out of 100) is weighted across four dimensions:

• Fee Transparency (30%) — Is the doc fee reasonable compared to the state average?
• Add-on Behavior (30%) — How often does the dealer bundle add-ons, and at what cost?
• Price Accuracy (30%) — Does the listing price match the actual OTD price?
• Data Quality (10%) — More verified quotes mean higher confidence in the grade.

Grades: A (90–100), B (80–89), C (70–79), D (60–69), F (below 60).

Stockton GMC Dealer Rankings at a Glance

#	Dealer	City	Grade	Score	Doc Fee	Add-Ons	Quotes
1	Gmc Of Vacaville	Vacaville	A	95	$85	$0	4
2	Fremont Buick Gmc	Fremont	A	93	$296	$200	10
3	Elk Grove Buick Gmc	Elk Grove	A	93	$85	$413	7
4	Mataga Buick Gmc	Stockton	B	88	$117	$1,009	8
5	Lehmer’s Concord Gmc	Concord	B	84	$85	$796	7
6	Folsom Buick Gmc	Folsom	F	50	—	$1,027	5

For the live list, including dealers graded since this page last updated, see the live GMC dealer rankings near Stockton on the CarEdge Dealer Transparency Index.

Compare GMC Dealers in Other Metros

CarEdge has graded GMC dealers in 32 US metros using verified out-the-door quotes. Compare other markets:

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How to Use This Data When You Shop

1. Get an OTD quote in writing before you visit. Any dealer can send a worksheet by email — if they won’t, that’s a red flag.
2. Ask for a quote with zero add-ons. Everything in the F&I office is optional. Say “please remove all dealer add-ons” and see what the price does.
3. Anchor to the OTD, not the listing. Dealers with a gap between advertised price and final OTD aren’t being straight with you. Don’t negotiate off the listing number.
4. Compare three dealers minimum. Even within the same metro, doc fees, add-on policies, and listing accuracy vary widely. Use this ranking as your shortlist.

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Rankings are generated from the CarEdge Dealer Transparency Index, a public methodology that scores dealers on verified out-the-door quotes — not Google star ratings or paid placements. CarEdge refreshes the rankings daily as new verified quotes come in.