Automatic transmission sun gear has a high rate of failure, per dealership. When it fails reverse gear malfunctions, and then all other gears fail to function. Dealership indicated that transmission needed reinforcement by using thicker material for the collar spine. This part failed twice within 11,000 miles.
The worst 1993 GMC G20 problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Brakes2
- Transmission1
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Brakes2
- Transmission1
Recalls 1
Wheels
- What is wrong
- These vehicles were equipped with incorrect spare wheels. The use of an incorrect spare wheel in a mounted position can, under certain load conditions, eventually cause the wheel to crack and possibly separate from the vehicle.
- Risk
- Should the wheel crack and separate from the vehicle, loss of vehicle control can occur, resulting in a vehicle crash without warning.
Recall number 94V053000 · Recall details
What 1993 GMC G20 owners say
Most recent owner complaints, unedited.
While driving on wet road traveling 35mph, applied brakes, and there were no brakes. Went straight through an intersection. On highway at 45-50mph and exiting off the ramp, hit gravel a vehicle stopped ahead. Consumer had to quickly apply brakes. But, again there were no brakes. Contacted dealer, they could not find the cause.
When applying the ABS brakes on dry pavement pedal nearley went to the floor, causing extended stopping distance . Please give any further details.
Compare the 1993 GMC G20
Other model years
19931995
Questions about the 1993 GMC G20
Is the 1993 GMC G20 reliable?
Owners have filed 3 complaints about the 1993 GMC G20, close to a typical G20 model year.
What is the most common problem with the 1993 GMC G20?
Brakes, with 2 complaints. Next is transmission (1).
How many recalls does the 1993 GMC G20 have?
1 recall, covering wheels.
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