2.0

hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
80,000 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 exhaust system problems

exhaust system problem

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1999 GMC Sierra 1500 Owner Comments

problem #1

Feb 182011

Sierra 1500 8-cyl

  • 80,000 miles

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

Broken exhaust manifold bolts. Factory installed exhaust manifold bolts routinely break on both sides of the engine. Nature of the failure and location of the broken bolts in the heads of the engine most often necessitate very expensive professional repair.

- Portsmouth, VA, USA

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