1990-1993 GMC S15/Sonoma Pickup: Reliability
Updated: 11/23/08
1993 GMC S15/Sonoma Pickup
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1990-1993 GMC S15/Sonoma Pickup
- Price Range: $600 - $6,300
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Our reliability study for this generation GMC Sonoma includes details on average repair costs, manufacturer recalls, and everything you need to know to gauge the long-term reliability of this generation GMC Sonoma .
Trouble Spots
Consumer Guide's® Auto Editors have scoured repair bulletins and questioned mechanics to search
for commonly occurring problems for a particular vehicle. In some cases we also give possible manufacturer-suggested
solutions. In many instances these trouble spots are Technical Service Bulletins posted by the manufacturer,
however, we have our own expert looking at additional vehicle problems.
Automatic transmission:
700-R4 automatic transmissions may shift late or not upshift at all because of a stuck throttle valve inside the transmission. (1990-93)
Climate control:
The temperature control lever may spontaneously slide from hot to cold, usually when the blower is on high speed. (1992-93)
Dashboard lights:
The oil pressure gauge may read high, move erratically or not work because the oil pressure sensor is defective. (1990-93)
Engine knock:
Engine knock on 4.3-liter engines during acceleration or climbing a grade is due to carbon buildup on the pistons. (1992)
Engine misfire:
The EGR valve may stick open due to carbon deposits causing rough idle. (1994)
Hard starting:
Engines with TBI may be hard to start after hot soak. (1990-93)
Consumer Guide® Estimated Repair Costs
This table lists costs of likely repairs for comparison with other vehicles. The
dollar amount includes the cost of the part(s) and labor (based on $50 per hour) for the
typical repair without extras or add-ons. Like the pricing information, replacement
costs can vary widely depending on region. Expect charges at a new-car dealership
to be slightly higher.
| Item Name | Repair Cost |
| A/C Compressor | $365 |
| Alternator | $195 |
| Automatic Transmission or Transaxle | $735 |
| Brakes | $207 |
| Clutch, Pressure Plate, Bearing | $415 |
| Exhaust System | $335 |
| Radiator | $325 |
| Shocks and/or Struts | $370 |
| Timing Chain or Belt | $205 |
| Universal Joints | $190 |
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