2004-2008 Pontiac Grand Prix: Reliability
Updated: 11/23/08
2008 Pontiac Grand Prix
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2004-2008 Pontiac Grand Prix ▼
- Price Range: $7,200 - $20,200
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Our reliability study for this generation Pontiac Grand Prix includes details on average repair costs, manufacturer recalls, and everything you need to know to gauge the long-term reliability of this generation Pontiac Grand Prix .
Trouble Spots
Consumer Guide's® Auto Editors have scoured repair bulletins and questioned mechanics to search
for commonly occurring problems for a particular vehicle. In some cases we also give possible manufacturer-suggested
solutions. In many instances these trouble spots are Technical Service Bulletins posted by the manufacturer,
however, we have our own expert looking at additional vehicle problems.
Audio system:
Radio reception may be poor or have static because the rear window defogger may have invisible cracks in the grid lines. (2004-05)
Brakes:
The front brakes may get noisy in stop-and-go traffic because a film develops on the brake rotor. Redesigned brake pads eliminate the problem by continually scraping the film away. (2005)
Electrical problem:
The PCM was being replaced for a defective chip under a voluntary emissions recall because it affected the fuel pump and EGR system. (2005)
Electrical problem:
If the OnStar system quits or won't come on (no power), but comes back to life if the fuse is removed for five minutes, the vehicle communications interface module must be replaced or else the problem will recur. (2005-06)
Fuel gauge:
The engine may not start or may stall because the tank is empty yet the gauge shows fuel remaining, or the fuel gauge will not show full after refilling due to sulfur corrosion of the fuel level sender and if after treating with Fuel System Cleaner PLUS the problem remains, the sender may need to be replaced. (2004-06)
Fuel gauge:
Noises from the rear of the car when there is about a quarter-tank or less of gas are due to the fuel pump pulling in air and there is a redesigned pump to fix this. (2005)
Transmission problems:
Transmission (4T65-E) may lack reverse, may slip in reverse due to loose bolt in valve body, which must be retightened along with replacement of the channel plate gasket. (2003-04)
Water leak:
Water may leak from the A-pillar (between windshield and door) due to a seam that was not properly sealed or onto the floor from the fresh air intake grille (2005) or the water deflector under the cowl needs to be replaced with an improved component. (2004-05)
Consumer Guide® Estimated Repair Costs
This table lists costs of likely repairs for comparison with other vehicles. The
dollar amount includes the cost of the part(s) and labor (based on $50 per hour) for the
typical repair without extras or add-ons. Like the pricing information, replacement
costs can vary widely depending on region. Expect charges at a new-car dealership
to be slightly higher.
| Item Name | Repair Cost |
| A/C Compressor | $600 |
| Alternator | $270 |
| Automatic Transmission or Transaxle | $2,600 |
| Brakes | $325 |
| Clutch, Pressure Plate, Bearing | $830 |
| Constant Velocity Joints | $930 |
| Exhaust System | $420 |
| Radiator | $190 |
| Shocks and/or Struts | $720 |
| Timing Chain or Belt | $1,340 |
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