2009 GMC CANYON

Typical onset: 80,000-150,000 mi

Symptoms: excessive oil consumption (1 qt per 1,000 mi or worse), blue smoke from exhaust on startup, knocking or ticking noises from lower end, sudden loss of oil pressure followed by seizure

Fix: These Isuzu-sourced I4s suffer piston ring and cylinder wear leading to total failure. Most need short block replacement or full engine rebuild. We're talking 18-25 labor hours for a used engine swap, 30+ for rebuild. Many owners discover this after catastrophic failure, not gradual decline.

Estimated cost: $3,500-6,500

Typical onset: 70,000-120,000 mi

Symptoms: pink or milky transmission fluid, transmission slipping or erratic shifting, coolant in transmission pan, engine overheating if coolant loss is severe

Fix: The internal transmission cooler in the radiator fails, allowing coolant and ATF to mix. This kills the transmission if not caught early. Requires radiator replacement, transmission flush (or rebuild if contamination went unnoticed), and both cooler lines. Budget 4-6 hours if you catch it early, 12-20+ if the trans is toast.

Estimated cost: $800-1,200 (early catch), $2,500-4,000 (with trans rebuild)

Typical onset: 90,000-140,000 mi

Symptoms: no-start condition, especially when tank is below half, engine stumbling or dying under load, whining noise from fuel tank area, check engine light with fuel trim or fuel pressure codes

Fix: In-tank fuel pump assembly fails, often stranding the vehicle. Replacement requires dropping the tank. 2-3 hours labor. Not uncommon to see filters clogged as well, but Canyon uses an internal non-serviceable filter in the pump module.

Estimated cost: $600-900

Typical onset: 60,000-100,000 mi

Symptoms: clunking when shifting from park to drive/reverse, excessive vibration at idle, visible sagging of transmission tailshaft, drivetrain shudder on acceleration

Fix: The rubber transmission mount deteriorates and tears, especially on 4WD models with added stress. Replacement is straightforward—support the trans, unbolt old mount, bolt in new. 1-1.5 hours.

Estimated cost: $150-300

Symptoms: brake lights stay on constantly (draining battery), brake lights don't illuminate at all, cruise control won't engage, shifter won't release from park (if interlock affected)

Fix: The brake pedal position switch fails in multiple ways—stuck on or stuck off. Was subject to NHTSA recall, but switches continue to fail outside recall scope. Replacement is simple, up under the dash at the pedal bracket. 0.5 hours.

Estimated cost: $100-180

Typical onset: 100,000-150,000 mi

Symptoms: coolant seepage at head/block interface (rear cylinders), slight coolant loss over time, no overheating or performance loss in early stages, visible coolant residue on back of engine

Fix: The I5s can develop minor head gasket weeps, typically at the rear cylinders. Not the catastrophic failure you see in I4s. If caught early and not overheated, head gasket replacement is preventive. 8-10 hours labor. Many owners live with a slow seep and just top off coolant.

Estimated cost: $1,200-1,800

Typical onset: 80,000-130,000 mi

Symptoms: check engine light with P0449 or P0446 codes, fuel tank difficult to fill (pump clicks off repeatedly), fuel smell near rear of vehicle, failed emissions test

Fix: The EVAP vent valve solenoid (mounted near fuel tank or frame rail) sticks closed or open, triggering emissions codes. Replacement is easy—often just one bolt and a connector. 0.5 hours. More annoying than dangerous.

Estimated cost: $120-220