Buick Envision 2

GM Ecotec Gen III with TriPower variable valve lift and cylinder deactivation. 228 hp, efficient and powerful enough. Dexos1 oil with short change intervals (max 5,000 miles) is mandatory. Active thermal management valves can fail under 50,000 miles — check for codes P00B7 and P2681.

• !! Thrust bearing wear — crank walk (LSY) from 80,000 km

  Rare but catastrophic: crankshaft thrust bearing wears, crank walks axially. Engine replacement required. $7,000–$11,000.

  Symptoms: Metallic clicking at idle, clutch engagement inconsistent, oil pressure fluctuates
  7,000–11,000 $
  Ad crankshaft LSY 2.0Tthrust bearing LSY GM
• !! Thermal management valve failure (LSY) from 50,000 km

  Active coolant circuit valves fail under 50,000 miles. Codes P00B7 and P2681 in fault memory. Can cause overheating if ignored.

  Symptoms: Check engine P00B7/P2681, temp rises sporadically, cooling fan runs constantly
  700–1,200 $
  Ad thermal management valve LSY 2.0Tcoolant control valve
• !! High-pressure fuel pump failure (LSY) from 120,000 km

  The HPFP can fail past 120k miles. Extended crank times, rough idle, P0087/P0089 codes.

  Symptoms: Long crank time, rough idle, power loss under load
  700–1,300 $
  Ad HPFP LSY 2.0T

+ 1 more engine weaknesses + vehicle weaknesses