Engine And Engine Cooling Related Problems of the 1999 GMC Sonoma

Table 1 shows four common engine and engine cooling related problems of the 1999 GMC Sonoma. The number one most common problem is related to the engine oil leaking (one problem). The second most common problem is related to the engine and engine cooling (one problem).

Table 1. Engine And Engine Cooling related problems of GMC Sonoma


Recently reported Engine And Engine Cooling problems of the 1999 GMC Sonoma

The Engine Oil Leaking problem

1) boyfriend driving, pulled up to intersection, truck stalled, restarted, died, noticed smoke, opened hood, fire near battery and antifreeze container, put out with snow, vehicle towed to dealership, contacted gm, told a rep would contact me within 24-48 hours, that was a week ago, no call,   Read details...

The Engine And Engine Cooling problem

I have encountered several different chevy/GMC vehicles that are experiencing a lagging start and in some cases no start without a boost. My Sonoma has the lag and I have a few friends that have blazers and full size trucks as well. The variation of engine sizes that are affected has me perplexed.   Read details...

The Engine Belts And Pulleys problem

Not sure if belt broke first or fan blade the blade broke off and flew inside of truck causing damage to parts under the hood it was 1000. 00 to fix all the parts broken by this. I have all the old parts.   Read details...


Engine And Engine Cooling related problems in other GMC Sonoma model year vehicles:



Fuel Economy of Sonoma Vehicles
Sonoma Service Bulletins
Sonoma Safety Recalls
Sonoma Defect Investigations