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Leaking Coolant, Cracked Intake Manifold Gasket

1999 Pontiac Grand Prix (Page 2 of 2)


pretty bad
Typical Repair Cost:
Average Mileage:
87,139 miles
Total Complaints:
21 complaints

Most Common Solutions:

  1. replacement of intake manifold (8 reports)
  2. replace intake manifold and engine (5 reports)
  3. replace intake manifold, major tune up and new oil change (4 reports)
  4. not sure (3 reports)
  5. replaced engine only to have the intakes crack again (1 reports)
1999 Pontiac Grand Prix engine problems

engine problem

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1999 Pontiac Grand Prix Owner Comments (Page 2 of 2)

« Read the previous 20 complaints

problem #1

May 172002

(reported on)

Grand Prix GT

  • 72,000 miles


The intake manifold on my Pontiac cracked because it is made out of plastic. Water and coolant leaked into the engine causing the pistons to hydraulic. Water does not compress like gas. The starters nose cone shattered and luckly none of the rods bent. In doing research on some other consumer complaint websites, this is happening to my model and the Grand Am. It is a design flaw by GM but they are not doing anything about it.

- , Murrieta, CA, USA

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