Question about 1991 GMC C1500
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Posted on Jan 02, 2017
SOURCE: 95 GMC hesitation
By "OVERDRIVE '' . are you meaning the TCC ( torque converter clutch ) is engaged ? and if so, when you increase RPM's to accelerate, it should disengage otherwise causing a noticeable hesitation. Hope this helps
Posted on May 07, 2009
Hi, i recommend changing the fuel filter and pump. these devices are dirty or clogged with debris. I also would recommend adding a fuel tank and injectors cleaner to the tank once you have replaced the pump and filter. this will scrub the fuel lines and injectors as well. this will increase the fuel economy of the car and it will clean the fuel system thoroughly. you should notice an improvement after you apply these changes to the cars fuel system.
Make sure the wires and plugs are in good condition. if the wires are old or fouled in any way, replace them along with a new set of spark plugs. change the air filter also.
please rate and have a great day:)
Posted on May 18, 2009
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