Other Fuel System Problems of GMC Sonoma

While driving the truck the brakes failed, pedal going to the floor. Took the truck to a repair shop and they stated that all the brake lines were rusted through, and more importantly, where the leaf springs attached to the underside of the car was completely rusted and the truck was unsafe to drive. The shop could not repair the car, and knew no one locally who could repair the car. There have been numerous rust issues with the truck over the years as follows: spare tire mounting rusted through and the spare tire flew off the truck in traffic; the fuel line had to be replaced twice due to rust; and the rear brakes rusted and had to be replaced three times.

See all problems of the 2003 GMC Sonoma 🔎.

The contact owns a 2003 GMC Sonoma. The contact stated while he drove 73 mph the vehicle stalled without warning. The contact was able to coast onto the emergency lane. The local mechanic performed a diagnostic test and was unable to locate a failure code. The vehicle was taken to a second dealership for additional inspection that advised that the spark plug and the fuel cap needed to be replaced. The spark plug and fuel cap was replaced. The manufacturer was not made aware of the failure. The failure and current mileage was 92,984.

Vehicle throttle sticks at 1500rpm and will stick above 1500rpm if downshifted or increasing speed. The only way to lower the rpm to idle is shift to neutral a n d come to a complete stop -- firmly holding brake to maximum depression and then only after a few second delay. Upon entering any gear [automatic xmsn] the rpm will again go to 1500, but if brake pedal remains depressed for about 10sec the rpm will go back to idle. Any slick roads or mountain/steep downhill driving is extremely hazardous! check engine stays on and computer reading calls for replacement of a sensor which has been replaced 3 times. The directions say to let the new sensor "break in" by idling for 20 minutes minimum prior to driving. It does not work! this is a faulty design wherein a sensor or component malfunction results in throttle boost beyond operator control and is often at rpm's above 2500 !!! the malfunction is permanent and the incident occurs every day the vehicle is driven !!!.

See all problems of the 1997 GMC Sonoma 🔎.

Gas gauge has stopped working, and correct gas level will not register properly.

Gas gauge does not indicate when vehicle is out of gas. Consumer feels this is dangerous because one never knows when he is running out of gas.