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#BS-1977-GMCK20-6063

1977 Gmc K20

Based on reports from 0 owners and 1 recall for this exact model.

Complaints

Crashes

Fires

Recalls

TSBs

✅

Preliminary Verdict

Green Light

Based on 0 complaints, 0 crashes, 0 fires, and 1 recalls.

See full verdict with buy/skip conditions

Preview: What's in your full report

Each card shows a real sample from your report — unlock all 10 sections from $1.20

30,000-Mile Cost Projection

Best Case

$X,XXX

Most Likely

$X,XXX

Worst Case

$X,XXX

Includes fuel costs, common repairs, and recall riskUnlock

Also in your report

Owner Intelligence

AI-synthesized themes from real complaints

Buyer Lot Checklist

Questions, test drive checks, walk-away triggers

Negotiation Talking Points

Data-backed dollar deductions

Buy / Skip Verdict

Final recommendation with conditions

10 sections total in the full reportUnlock all

Don't negotiate blind — know what this car costs to own

Repair costs • Negotiation scripts • Mechanic checklist • Buy/skip verdict

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Recall History (1 recall)

77V178000Nov 1977

VEHICLE SPEED CONTROL:ACCELERATOR PEDAL

THE ACCELERATOR PEDAL ROD IN COMBINATION WITH THE PEDAL INSTALLED ON THE INVOLVED VEHICLES MAY CUT THROUGH THE FLOOR PAN RUBBER MAT OR CARPET INTO THE THICK RESILIENT INSULATION PAD UNDERNEATH DURING HEAVY OR REPEATED FULL THROTTLE APPLICATIONS. AS A RESULT, THE ACCELERATOR PEDAL ROD MAY CATCH IN THE MAT OR CARPET, PREVENTING THE THROTTLE FROM RETURNING TO IDLE WHEN THE DRIVER"S FOOT IS REMOVED FROM THE PEDAL.

Recall severity analysis & seller scripts

The full report rates each recall's severity and gives you scripts for asking the seller about recall completion.

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About this data

NHTSA Complaints

Federal database of owner-filed safety complaints. 0 records for this vehicle.

NHTSA Recalls

Manufacturer-issued safety recalls. 1 recall found for this vehicle.

Repair Cost Data

Real-world repair costs from owner reports and independent databases.

Other Gmc K20 Model Years

1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976

View all Gmc K20 years →

1977 Gmc K20: Frequently Asked Questions

What is the most common problem with the 1977 Gmc K20?

Based on NHTSA data, the 1977 Gmc K20 has 0 total complaints on file.

Is the 1977 Gmc K20 reliable?

The 1977 Gmc K20 has 0 complaints, 0 crash reports, and 0 fire reports filed with NHTSA. The full report analyzes whether these numbers indicate real risk or are proportional to the vehicle’s popularity.

How much does it cost to fix 1977 Gmc K20 problems?

Repair costs vary by issue. The full BumperScan report includes detailed repair cost estimates (low/median/high) for every major issue, plus a 30,000-mile total cost of ownership projection.

Does the 1977 Gmc K20 have any recalls?

Yes, the 1977 Gmc K20 has 1 recall on record. The full report includes recall severity analysis and scripts for asking the seller about recall completion.

What mileage do Gmc K20 problems start?

Mileage data is limited for this vehicle. The full report analyzes available data to identify failure patterns by mileage range.

What’s in the full report?

10 sections of AI analysis: severity-ranked issues, component scores (0-100), 30K-mile cost projection, failure timeline by mileage, recall details with seller scripts, owner sentiment analysis, mechanic checklist, buyer lot checklist, negotiation ammo with dollar figures, and a buy/skip verdict.

How is this different from free NHTSA data?

NHTSA gives you raw complaint text. BumperScan cross-references 2.1M+ complaints with community repair cost data, EPA fuel data, and recall records — then uses AI to synthesize it into actionable advice with dollar figures.

How is this different from Carfax?

Carfax is VIN-specific history ($45/report). BumperScan is model-level reliability intelligence — what problems this car is known for, what they cost, and whether you should buy it. Complementary, not competing.

What if the report isn’t useful?

100% money-back guarantee. If the report doesn’t help you make a more informed decision, we’ll refund you — no questions asked.

Get the Full 1977 Gmc K20 Report

10 sections of AI analysis based on 0 owner reports. Know before you buy.

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