1997 PONTIAC GRAND PRIX

Typical onset: 60,000-100,000 mi

Symptoms: coolant loss with no visible external leaks, white smoke from exhaust on cold start, oil looks milky or contaminated, engine overheating or rough idle

Fix: Replace upper and lower intake gaskets, often includes new coolant elbows and thermostat housing while apart. 4-6 hours labor depending on accessibility and fastener condition. Critical to use updated Fel-Pro or Dorman gaskets, not OEM Dex-Cool compatible sets.

Estimated cost: $500-900

Symptoms: clunking over bumps from front end, steering wheel off-center after hitting pothole, visible rust perforation or scaling on cradle when inspected from below, premature inner tire wear from alignment shift

Fix: In salt-belt states, the front subframe corrodes through at mount points and bushing pockets by 15-20 years. Replacement requires complete cradle removal (8-12 hours), engine support, and often new control arms and tie rods due to seized fasteners. Some shops weld reinforcement plates; full replacement is safer long-term. This is a structural safety issue.

Estimated cost: $1,200-2,500

Typical onset: 90,000-140,000 mi

Symptoms: power steering fluid puddles under car, groaning noise when turning at low speed, heavy steering effort intermittently, fluid dripping from inner tie rod boots

Fix: Rack seals fail, often both sides eventually. Rack replacement requires subframe drop or substantial lowering (6-8 hours), alignment mandatory. Aftermarket racks are hit-or-miss; quality remanufactured units recommended. NHTSA recall 97V086000 covered some early racks but most are now aged out.

Estimated cost: $800-1,400

Typical onset: 120,000+ mi

Symptoms: oily film on windshield interior, sweet smell in cabin, AC blows warm or intermittent cooling, passenger floor wet with no coolant smell (refrigerant oil residue)

Fix: Evaporator is buried behind the entire dash assembly. Full dash removal required: 10-14 hours labor, includes recovery/recharge of R134a, often replace expansion valve and receiver/drier at same time. Dash clips are brittle; budget for broken trim tabs. This is the single most labor-intensive common repair on this platform.

Estimated cost: $1,200-1,800

Typical onset: 80,000-130,000 mi

Symptoms: random misfires or stumble under load, stalling when engine is hot then restarts when cool, check engine light with P0300-series codes, car cranks but won't start intermittently

Fix: ICM mounts under coil packs, heat-cycles cause solder joint failures. Replace ICM and often coil packs as set (they stress each other). 1.5-2.5 hours labor. Dorman or AC Delco modules both acceptable; avoid no-name offshore units. Confirm with spark test before throwing parts.

Estimated cost: $300-550

Typical onset: 100,000-150,000 mi

Symptoms: long crank or no-start when tank below 1/4, engine stalls at highway speed then restarts, fuel gauge erratic or reads empty when tank is full, whining noise from rear seat area

Fix: Pump assembly is in-tank, accessed through rear seat cushion removal. 2-3 hours labor, includes new strainer/sock and tank seal. Ensure fuel pressure test confirms failure (should be 41-47 PSI). NHTSA recall for pressure relief but not pump itself. AC Delco or Delphi pumps strongly preferred.

Estimated cost: $450-700