Free VIN Decoder
Instantly decode any Vehicle Identification Number (VIN) for free. Get vehicle specs, history, and recall information in seconds.
1GDCT14Z3M8801463
Vehicle Summary
The 1991 GMC Sonoma is a robust pickup with a 4.3L V6 engine, delivering solid power through its 4WD system. Manufactured by GENERAL MOTORS LLC in Shreveport, Louisiana, this model features a 2-door configuration and a hydraulic brake system. Ideal for those needing a reliable and capable truck, it falls within the Class 1C weight rating. This Sonoma's throttle body fuel injection system ensures efficient gasoline consumption.
Complete Specifications
Common Issues for This Vehicle
Brake fluid leaks
Hydraulic brake systems can develop leaks in the brake lines, master cylinder, or brake calipers, leading to reduced braking performance or brake failure.
Brake fade
Continual or heavy braking can cause the brake fluid to overheat, leading to reduced braking efficiency, commonly referred to as brake fade.
Warped brake rotors
Repeated heavy braking can cause the brake rotors to warp, leading to vibrations and reduced braking performance.
Master cylinder failure
The master cylinder can wear out over time, leading to a loss of hydraulic pressure and brake failure.
Brake pad wear
Brake pads wear out over time and need to be replaced regularly to maintain effective braking.
Engine overheating
V-shaped engines, especially older ones, can suffer from cooling issues leading to overheating, which can cause significant engine damage if not addressed.
Oil leaks
V-shaped engines, especially older models, are prone to developing oil leaks at the valve cover gaskets, oil pan, or rear main seal.
Timing chain/belt issues
Over time, timing chains or belts can wear out or become misaligned, leading to poor engine performance or potential engine damage.
Fuel injector problems
Older fuel injectors can become clogged or fail, leading to poor engine performance and fuel efficiency.
Ignition system failures
Components such as the ignition coil, spark plugs, or distributor can fail, leading to misfires, rough idling, or difficulty starting the engine.
Exhaust manifold cracks
The exhaust manifold in V-shaped engines can develop cracks over time, leading to exhaust leaks and reduced engine performance.
Intake manifold gasket leaks
V-shaped engines can experience intake manifold gasket failures, leading to vacuum leaks, poor engine performance, and potential overheating.
Found This Tool Helpful?
Support VinCyP to keep this service 100% free for everyone!