10.0

really awful
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
0 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

1999 GMC Sierra 1500 engine problems

engine problem

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1999 GMC Sierra 1500 Owner Comments

problem #1

Apr 172001

(reported on)

Sierra 1500 4WD

  • Automatic transmission
  • miles

A D V E R T I S E M E N T S

While traveling vehicle idles high. To reduce idle consumer had to put vehicle in neutral. Low idle goes to only 1000 RPM. Vehicle fails to throttle back for four second.

- Sweeny, TX, USA

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