2020 CHEVROLET CAVALIER

Typical onset: 60,000-90,000 mi

Symptoms: rattling on cold starts that quiets after 10-15 seconds, check engine light with timing-related codes P0016/P0017, rough idle or hesitation on acceleration, sometimes mistaken for lifter noise initially

Fix: Timing chain, guides, tensioner, and typically VVT solenoids while you're in there. 8-10 hours labor because front cover comes off and oil pan drops for proper alignment. Some techs also replace the oil pump drive chain at same time to avoid a comeback. Engine must be at TDC and camshaft timing tools are required.

Estimated cost: $1,800-2,800

Typical onset: 50,000-80,000 mi

Symptoms: persistent ticking or tapping from valve cover area, noise louder when engine is hot, doesn't go away after oil changes, can progress to check engine light with misfire codes if ignored

Fix: Replace affected lifters, though many techs recommend doing all 16 if one or two have failed. Requires valve cover removal and careful inspection. 4-6 hours if just lifters; if cam lobes show wear you're into 10+ hours for camshaft replacement. Always inspect cam lobes and rocker arms while in there.

Estimated cost: $900-1,500 for lifters only, $2,200-3,500 if camshaft needed

Typical onset: 40,000-70,000 mi

Symptoms: transmission fluid spots under car near front-center, burnt smell from engine bay, harsh shifting or delayed engagement when transmission is hot, transmission warning light in severe cases

Fix: Cooler lines corrode or rub through where they pass near subframe mounting points. Replace both cooler lines and inspect the transmission oil cooler itself for blockage. Sometimes requires trans mount removal for access. 2-3 hours labor. If fluid has been low for a while, expect internal transmission damage and much higher costs.

Estimated cost: $400-700 for lines and cooler inspection, $2,500-4,000 if transmission internals damaged

Typical onset: 50,000-80,000 mi

Symptoms: clunking when shifting from park to drive or reverse, excessive engine movement visible under hood during acceleration, vibration through floor and steering wheel at idle, sometimes mistaken for transmission problem

Fix: Transmission mount fails first due to torque load from turbo engine. Upper engine mount also common. Transmission mount is 2-2.5 hours, upper mount 1.5 hours. Replace in pairs for best results. Inspect all three mounts while diagnosing.

Estimated cost: $350-550 per mount

Typical onset: 70,000-110,000 mi

Symptoms: severe vibration at idle that worsens with RPM, squealing or chirping from serpentine belt area, visible wobble on crankshaft pulley when engine running, check engine light with crankshaft position sensor codes

Fix: Rubber ring separates from outer pulley ring, causing belt misalignment and potential sensor damage. Must replace balancer and inspect crankshaft snout for damage. 3-4 hours labor. If it grenades completely, it can take out the front main seal, timing cover, and crank sensor. Don't drive it once wobble is confirmed.

Estimated cost: $500-800 if caught early, $1,200-2,000 if seal and sensors damaged

Symptoms: milky oil on dipstick or under oil cap, white smoke from exhaust, rapid coolant loss with no visible leaks, overheating after transmission cooler or timing chain failure

Fix: Usually consequence damage from another failure (cooler leak causing overheat, timing chain skip causing valve-to-piston contact). Head removal, resurface, valve job, new head gasket and bolts. 12-16 hours labor. Sometimes requires complete engine rebuild if block deck is warped or cylinder walls scored. Test block and head for warpage before reassembly.

Estimated cost: $2,800-4,500 for head work, $5,000-7,500 for short block replacement