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.

Engine knock: Engine knock when the engine is first started is usually eliminated by using an oil filter with a check valve. If this doesn't work, GM has revised PROMs for the computers and may even replace the main bearings. (1995)

Engine misfire: A problem with the powertrain-control module may cause a lack of power, early upshifts, late shifting in the 4WD-Low range, and otherwise erratic performance. (1996)

Engine noise: The exhaust valves may not get enough lubrication causing a variety of noises. The same engine may consume excess oil because the valve-guide seals on the exhaust valves are bad. (1996)

Engine temperature: Overheating and coolant loss may be due to rough surface on radiator filler neck. Neck should be sanded smooth and cap replaced. (1999-2000)

Transmission leak: 4L60 automatic-transmission pumps may leak. A revised pump bushing is available. (1995-96)

Transmission problems: If automatic transmission goes into neutral while driving and check-engine light comes on, there may be debris collecting in the transmission valve body. (1999-2002)

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.

1996 w/AWD or 4WD: During testing, prop shaft contacted fuel tank, rupturing the tank; fuel leakage was beyond permissible level.

1996: Solder joints can crack, causing windshield wipers to work intermittently.

1996: The windshield wiper motor may fail on certain vehicles. Dealer will inspect and replace affected parts.

1996-97: Failure of an upper and lower control arm ball joint assembly could occur due to corrosion, resulting in impaired steering or steering loss, or a partial or complete collapse of the front suspension.

1997: During a severe crash, seat belt buckles with an energy absorbing loop may malfunction, leading to full or partial ejection from the vehicle. Dealer will inspect and replace affected buckles.

1998 w/AWD or 4WD: On a few vehicles, one or both attaching nuts for lower control arm were not properly torqued; can result in separation from frame and loss of control.

1998: Fatigue fracture of rear-axle brake pipe can occur, causing slow fluid leak and resulting in soft brake pedal; if pipe breaks, driver would face sudden loss of rear-brake performance.

2000-01: Brake lights and rear hazard flashers may fail if the multifunction switch develops an open circuit condition.