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)

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)

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)

Engine knock: EVAP canister is broken by improperly lifting the vehicle with a hoist unless the pads are positioned on the specific lift points. (2004-06)

Engine noise: The serpentine drive belt on the 3.5L engine may squeal and smell of burning rubber. A revised belt is available for replacement. (2004-05)

Engine noise: A whistling noise from the 3.5L engine during acceleration is corrected by replacing the PCV tube. (2005)

Exhaust system: High oil consumption on the 2.2L engine, plus blue exhaust smoke, may be due to an intake manifold on which the PCV passage is too large and/or the valve cover is defective, requiring replacement of one or both. (2004-05)

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: The fuel gauge on cars with the 2.2L engine may not move, requiring recalibration of the PCM. (2004)

Hood/trunk: The hood won't stay shut in cold weather because ice forms inside the hood release cable. (2004-05)

Oil leak: Oil may leak from the 2.2L engine front crankshaft seal, especially in the winter, as the seal is damaged if ice forms at the mating surface then rips the seal lip when the engine is started, for which there is an improved seal. (2004-05)

Steering problems: Power steering assist quits because the steering angle sensor was installed incorrectly, causing wear and a campaign to replace the sensors which expires on Jan. 31, 2006. (2004)

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.

2004 Malibu: Antilock braking could be activated when not needed, due to an erratic rear-wheel speed sensor signal.

2004 Malibu: Outboard anchorage of driver's seat belt could disconnect, because of contact between seat trim and connector when seat is adjusted to lowest position.

2005-06 Malibu w/aftermarket leather seats: Testing has indicated that the aftermarket leather seat covers can cause the passenger sensing system to malfunction. If the passenger sensing system malfunctions, the front air bag on the passenger side may be disabled when it should be enabled, or enabled when it should be disabled. GM will purchase these vehicles for the full price paid for it (not exceeding the fair market value at the time it was bought), including taxes and fees, if the vehicle is returned to GM's possession by January 31, 2007. Through January 31, 2007, GM will also pay for the removal of any aftermarket accessories that may have been installed and return them to the customer.

2006 Malibu: Tire label specifies 15-inch spare for front-disc/rear-drum brake system, but it should specify 16-inch.