Two problems related to engine have been reported for the 1996 GMC Sonoma. The most recently reported issues are listed below.
My engine has been surging, slow start, rattling, rough idle, hard shifting, and I have had the trasmission replaced 3 times. My dealer told me after an inspection that there was nothing wrong, but it was under warranty at the time. Go figure! I have proof of the new trasmissions. Now the compressor is cracked, and it will not hold coolant, and I can hardly get the truck going after sitting all night. These repairs are costing alot of money, and I am still paying for this truck. It is not worth the cost of repairs.
Timing chain broke at only 42,000 miles, and while driving, it causes valve to push through head.