How much to replace a differential on a 1988 GMC sierra?

Replacing a differential on a 1988 GMC Sierra can cost between $500 and $2,500, depending on factors such as labor rates, whether you choose to replace it with a new, used, or remanufactured unit, and any additional parts needed. Labor costs typically range from $100 to $150 per hour, and the job may take several hours. It's advisable to get quotes from local mechanics for a more accurate estimate based on your specific vehicle and situation.