1999 GMC Suburban Engine cooling Problems

“Vehicle engine will intermittently stall or cut out at highway speeds. This condition occurs approximately once or twice a month under varied driving conditions. The vehicle will restart immediately after stalling. Several times when this has occurred, the service engine light will come on, but it will turn off after 20-30 miles of driving. This has been occurring for over a year now, I have taken the vehicle to three GM dealerships, and they claim they cannot replicate the problem. They have replaced the fuel pump at my expense, and the catalytic converter under warranty. …”

“1999 Gmc Suburban SUV: leaking intake manifold spilling coolant to environment. Engine damaged as coolant mixed with oil and/or fuel. 50k miles, driven by soccer mom to school, practice, church. Epidemic problem per family mechanic performs dozens of these repairs per month. High expense for this premature failre: repair $780.”

“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 !”

“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!”

“I lost track of brake failures. The tires wear excessively and need balancing and rotation. There is a vibration from the gas pedal, but nothing is found. The better business bureau resulted in an unsatisfactory offer - I have to pay to clear the title to have the car taken back. No other '99 is like ours to replace it.”