GMC · Canada · High
GMC Envoy: Engine
Affects GMC Envoy · 2002 — about 3K vehicles.
The hazard
On certain vehicles, the Electronically Controlled Air Suspension (ECAS) may produce a brief electrical spike while the vehicle is operating. This electrical spike can disrupt the Powertrain Control Module (PCM) causing the vehicle to stall. If the spike damages the PCM, the vehicle may not restart. Correction: Problem previously addressed by Technical Service Bulletin A001831 in January 2002.
What to do
Contact your dealer; the remedy details were not included in the filing.
Critical — crash/injury risk now
High — injury risk; see remedy
Moderate — fix at next service
Low — minor / informational