1991 GMC Sierra - Page 4 - Answered Questions & Fixed issues
Spits and sputters until warm
TUNE-UP, SPARK PLUGS, WIRES, AIR & FUEL FILTERS, FUEL INJECTOR CLEANER IN TANK, ALSO REPLACE PCV VALVE, & MOST IMPORTANT, REPLACE EGR VALVE, IT GETS TOTALLY CLOGED UP, YOUR ENGINE IS KNOWN FOR THAT. I HAVE A GNC 2500, 3/4 TON. SEEN IT ALL. CHANGE YOUR DISTRIBUTOR CAP & ROTOR ALSO. JUST DO IT !!!!!!!!!!!
2/14/2013 4:25:40 AM •
1991 GMC Sierra
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Answered
on Feb 14, 2013
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704 views
My 91 gmc sieera 2500 will start but will not stay running
Could be several things.Someone will need to find out if you are loosing spark to the plugs or fuel to the injectors when it dies. If the pump stops running it could be a fuel pump relay. If the ignition system dies it could be a faulty coil.And so on.
12/15/2012 7:55:41 PM •
1991 GMC Sierra
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Answered
on Dec 15, 2012
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227 views
Climate control want work
Your EAC has self diagnosis by flashing symbols on the display panel,When a fault is detected the control will flash the appropriate symbols, This climate control is based on rapid a/c clutch cycling,if a fault is detected from the a/c clutch it will be disabled for all ignition cycle,remove battery power this will temporaily restore a/c operation ,if there is a rapic a/c cylcle the system will disable a/c operation,or if the a/c clutch is shorted,open,or grounded you will have no a/c operation
3/17/2012 6:03:57 PM •
1991 GMC Sierra
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Answered
on Mar 17, 2012
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295 views
Truck not firing
All of the parts that create spark are in the distributor or on it. I suggest you buy a rebuilt distributor. I base this recommendation on what you said is the problem, no fire, you mean it has been confirmed it has no spark to the spark plugs, if this is not correct let me know.
2/16/2012 4:33:11 PM •
1991 GMC Sierra
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Answered
on Feb 16, 2012
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47 views
Brake lights stay on, pull
BRAKE LIGHT STAYS ON COULD PROBLEM IN BRAKE SYSTEM IF YOU REPLACE AND ADJUST PARKING BRAKE COULD BE PROBLEM IN BRAKE HYDRALIC SYSTEM.
9/7/2011 10:10:34 PM •
1991 GMC Sierra
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Answered
on Sep 07, 2011
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374 views
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