Four problems related to engine cooling system have been reported for the 1999 GMC Suburban. The most recently reported issues are listed below.
1999 GMC Suburban. Intake manifold gasket failed. This occurred after replacing the water pump which failed for the second time in less than a year. My mechanic says this is epidemic with the gm vehicles which use the dexcool antifreeze. My experience bears this out: my previous vehicle was a 1999 chevy Suburban, which had the same problems. There should be a recall of all these vehicles!.
1999 GMC Suburban intake manifold gasket failure on 5. 7l engine resulting in leaking antifreeze, and expensive fix. Thousands of similar failures, there should be a (forced) recall based on magnuson-moss !.
Intake manifold leaks due to a defect in the design/materials of the gasket. The material prematurly breaksdown causing leaking of the manifold.
Left rear intake manifold leak. On a 1999 vehicle with only 48,520 miles (light useage for mom and kids) this problem seems a bit premature. My brother who owns a 1998 GMC with about 60,000 miles had simular problem. The part must be defective as both problems are very simular in nature. Cost to fix $700 to $1,000 . Thank you.