Question about 1998 GMC Sierra
Replaced craked heater core,cylinder heads, water pump, timing chain, and tune up. Also new IAC, fuel and airfilter, ECM module, both coolant sensors,thermostat, coollant, and alternator. after start up the engine runs smoothly but soon after it warms up ( guage shows 190ish ) the engine will violently stall. I replaced the coolant sensors and the guage showed the engine was over 260 quickly. I didn't quite trust it though and replace it again new one shows the engine goes to 200 then drops back to 160 repeatedly. After driving for 5 or 6 miles the engine starts to stall violently and then quits. If it is overheating what is causing it and why won't the gauge indicate it?
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Posted on Jan 02, 2017
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