The power door lock actuators may become slow to operate or stop working completely and require replacement.
Car Problem Reports
GMC Suburban 2500 Power Door Lock Actuators May Fail
GMC Suburban 2500 Problem
Average Mileage: 171,125 mi (110,000 mi - 200,000 mi)
Visitor, 1992 GMC Suburban 2500, 189,000 mi
SLUGGISH SLOW LOCKS LOSE POWER WHEN ACTIVATED 2 OR 3 TIMES, I THINK COIL OR POWER SURGE NOT ENGAGING PROPERLY...AYYYY NO ONE KNOWS WHAT IS UP....!!!
Visitor, 1999 GMC Suburban 2500, 110,000 mi
door locks sluggish to cycle. if you cycle the locks 2 or 3 times they will not operate at all. Seems to be lacking power, like several strands of wire are broken reducing the current that goes to the locks.
Visitor, 1999 GMC Suburban 2500, 196,000 mi
Power door locks have quit working and I am getting a 2AMP draw off the battery which drains it by morning. Could the door lock actuators be doing this?
Visitor, 1998 GMC Suburban 2500, 200,000 mi
Im sorry i ever dealt with such a dangerous vehicle,door locks stuck and cant get the back doors open at all,locked for good
Visitor, 1996 GMC Suburban 2500, 199,000 mi
I have replaced several of the actuators over the last couple of years.
slow locks, sluggish locks 2x cycles especially....help?
Power door locks work intermittently. Have to manually lock them. Not fixed yet. Not sure if it is the actuators or a bad ground. Noticed that if I play radio for a minute or so after parking and turning off motor, the locks have more "power" and will work correctly.