Both outside mirrors have fallen off before 90K miles. This was due to the plastic deteriorating at the junction where the mirror "folds away." Replaced egr valve several times. The first three were under warranty, the rest have been on me. In addition, most major fuel system components have been replaced, or repaired. The idle has always been rough, and it will on occasion, smoke and omit strong odors of unburned fuel. Wipers failed at 20K miles. I resoldered the circuit board to correct the problem. Drivers seat will not stay in a locked position, which causes me some concern. By the way, the first week I had the car (bought it new), the seat would not stay locked. Took it to the dealer, and was promptly told that "it is a normal condition." Hmmm, as a design engineer I have to wonder about the logic behind this; as any forward or rearward impact would allow the seat to flex which could make a minor non-injury accident something far worse. The water pump has been replaced three times, alternator twice, battery five. All parts were replaced with original parts through GM. I have had all brake components replaced three times, and still there is a painful chatter of the pedal under certain conditions, which is outside the ABS parameters. Wind noise is quite loud, as the fit of the drivers side door is, for lack of a better word, terrible. The plastic which covers the A/C within the engine compartment has deteriorated to the point where it has broken and fallen away, piece by piece, sometimes lodging itself on the exhaust manifold, causing some rather unpleasant odors. Oh, and since there is no longer any covering over the A/C, it goes without saying that the coldness, which was the saving grace of this vehicle, has been reduced to that of a glorified fan.

- Dallas, TX, USA

The battery failed. Nlm

- Blythewood, SC, USA

The battery leaked and damaged the cables.

- Torrance, CA, USA

After ABS brake recall was fixed experienced may problems. Battery and altenator failure within a week and 4-wheel switches do not work, transmission will not shift to overdrive.

- Westminster, CO, USA

With the first event they replaced-battery nad serb belt. The next event happened 2 months later. The next event occurred when the engine began to run so roughly that the brakes would barely stop the car. That time they replacedan egr valve. Within the week a third event occured. The car wouldn't start because of a dead battery. The problems were finally traced to a leaking battery and corroded battery cable. So far I haves spent a total of $935.86 having the things fixed that eventually was traced to the battery/battery cable leakage

- Gleneden Beach, OR, USA

The oem battery developed a slow leak. The highly corrosive fluid dripped onto several brake lines and the actuator cable for the 4WD transfer case. The corrosive destroyed the cable and began to eat away at several brake lines that run to the front brakes. If I had not found the leak in time, the battery corrosive would have eaten through the brake lines causing complete brake failure. The battery acid also corroded the right front frame member. I recently discovered that other GMC trucks (not Jimmy/Blazer) have had the same/similar problem which triggered a nhtsb product safety alert. This is a serious problem. I contacted GMC and told them about this...they seemed indifferent. I tried to tell them about the product safety alert for this same problem to their Yukon & Suburban but GMC would not corroborate my information. The file number GMC issued for my complaint was 00048689. Thank you.

- Kenosha, WI, USA

Battery failed. Nlm

- San Juan, PR, USA

Battery failed.

- Frisco, TX, USA