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Home >> Chevrolet >> 2000 >> Suburban C2500 >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window System - New Style >> Trouble Shooting >> Preliminary Inspection

Preliminary Inspection

  1. Check condition of POWER WINDOW circuit breaker, located in Left Bussed Electrical Center (LBEC). See COMPONENT LOCATIONS  . If circuit breaker is open, locate and repair cause of overload. Replace if damaged.
  2. Check IGN B maxifuse (50-amp) located in Left Bussed Electrical Center (LBEC). If fuse is blown, locate and repair source of overload. Replace fuse.
  3. Check RAP maxifuse (50-amp) located in Underhood Bussed Electrical Center (UBEC). If fuse is blown, locate and repair source of overload. Replace fuse.
  4. Check for mechanical failures or binding linkage.
  5. If express down feature does not work, but window moves down with each switch depression, replace left window switch.
  6. Check for broken or partially broken wire inside insulation, which could cause system malfunction but prove good in a continuity/voltage check with system disconnected. These circuits may be intermittent or resistive when loaded. Check by monitoring voltage drop with system under load.
  7. Check for proper installation of aftermarket electronic equipment. If problem still exists, repair by appropriate symptom. See SYMPTOM INDEX  table under SYMPTOM TESTS.