1999 GMC Sierra transmission problems
The 1999 GMC Sierra has 41 transmission complaints filed with NHTSA — 6% of the year's total, and up sharply from the prior model year.
41
Transmission complaints
6%
Share of year
2
Crash-involved
0
Related recalls
Transmission complaints by year
What owners report
“ABS SYSTEM FAILS ON PANIC STOPS. SUDDENLY APPLIED PEDAL PRESSEUR LOCKS BRAKE PEDAL AND PROVIDES LITTLE OR NO BRAKING FOR APPROXIMATELY 1 SECOND. I HAVE BEEN TOLD BY THE DEALERSHIP'S SERVICE DEPARTMENT THAT THIS IS TYPICAL OF ALL ABS AND THAT I NEED TO TRAIN MYSELF NOT TO JAM THE BRAKES IN AN…”
Common questions
How many transmission complaints does the 1999 GMC Sierra have?
NHTSA has 41 complaints about the 1999 GMC Sierra transmission — 6% of all complaints filed for that model year.
Related
Based on NHTSA ODI data through June 2026. Complaints are consumer-reported and unverified. Updated July 5, 2026.
Compiled by Sharon Ben-Moshe, Founder.