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6.0

fairly significant

Typical Repair Cost:

$350.00

Average Mileage:

47,000 miles

Total Complaints:

1 complaints

Most common solutions:

  1. remove and replace plenum (1 reports)
Pontiac Bonneville engine problems

engine problem

Helpful Websites About 1999 Pontiac Bonneville warped plenum

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

problem #1

2004Apr 14

(reported on)

Bonneville LE

  • 47,000 miles

From what I have found this is a fairly common problem on these 3.8 cu engines. The plenum is made of plastic which warps and allows for leakage of the engine coolant. Considering the number of 3.8 cu engines produced and in use there should be some sort of compensation or class action filed against G.M.

cade

Onalaska, Wi., USA

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