Engine And Engine Cooling Related Problems of the 1999 GMC Sierra 3500

Table 1 shows one common engine and engine cooling related problems of the 1999 GMC Sierra 3500.

Table 1. Engine And Engine Cooling related problems of GMC Sierra 3500

Problem Category	Number of Problems
Manifold/header/muffler/tail Pipe problems	1

Manifold/header/muffler/tail Pipe problem

Cab keeps filling up with exhaust fumes, causing passenger to get sick. Dealer claims engine gets too hot, causing engine manifold to warp and gasket to blowout. It is a design flaw.

Engine And Engine Cooling related problems in other GMC Sierra 3500 model year vehicles:

Manifold/header/muffler/tail Pipe problems of the 2005 GMC Sierra 3500
Engine Exhaust System problems of the 2002 GMC Sierra 3500
Engine Exhaust System problems of the 2006 GMC Sierra 3500
Engine Exhaust System problems of the 2015 GMC Sierra 3500
Engine Belts And Pulleys problems of the 2001 GMC Sierra 3500
Engine Belts And Pulleys problems of the 2016 GMC Sierra 3500
Diesel Engine problems of the 2008 GMC Sierra 3500

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★ Safety Ratings of Sierra 3500 Cars

☘ Sierra 3500 Service Bulletins

⚑ Sierra 3500 Safety Recalls

☤ Sierra 3500 Defect Investigations