2020 GMC Canyon Pre-Purchase Inspection Checklist
Known Issues — 2020 GMC Canyon
MODERATE
Infotainment system freezing
MODERATE
6-speed automatic transmission rough cold shifts
MODERATE
2.8L Diesel DEF sensor failures
MINOR
Tailgate cable fraying
MINOR
USB-C port reliability for Apple CarPlay
MINOR
AC evaporator core leak at higher mileage
What to Inspect
- Test 6-speed shift quality cold and warm
- Test infotainment for freeze
- On Diesel — check DEF system
- Inspect tailgate cables
- Test CarPlay connectivity via USB
- Test AC for evaporator leak symptoms
Expected Maintenance Costs
| Service | Interval | Cost |
|---|---|---|
| Oil change (synthetic) | every 7,500 miles | $60-$90 |
| Transmission fluid service | every 45,000 miles | $150-$250 |
| Spark plugs (V6) | every 60,000 miles | $150-$250 |
| Rear differential fluid | every 45,000 miles | $80-$130 |
| DEF fluid refill (Diesel) | every 5,000 miles | $20-$40 |
| Brake service (pads and rotors) | every 45,000 miles | $300-$500 |
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