| GMC 6.5 Problems
I had my 95 GMC fuel system go belly up in Gaithersberg MD on the way to Rehobeth Beach from Wisconsin. It cost me $1500 and a hotel stay to fix. I had the same initial symptoms before the trip and the dealer replaced the turbocharger, waste gate solenoid. It turns out that the real problem was the fuel distribution module, the fuel pump, and injector control(they all talk to each other)
I still get some bucking under a heavy pull after idling for any more than a few minutes. I have no idea why? It seems like the fuel in the lines gets heated and cause instability in injection. Once I have been moving for a mile or so after a long idling period the bucking goes away.
Also please take advantage of the service letter covering the incredibly frustrating wipers on the 94~99 trucks. After replacing wiper motors, relays, switches, to the tune of $500 I bypassed the circuit and had them just running at one speed with an on/off switch I installed on the dash. It turns out an under-rated land on the back of the relay board cracks and intermittently goes open, always in a downpour and always on an interstate! They now fix it for free and reimburse you for all the prior wasted money fixes.
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