Question about 2000 GMC Safari
... Distributor cap/rotor, Ignition wires, O2 Sensors (#2 position, right and left), Air flow Sensor, and fuel pump/filter. The results are the same. Two transmission shops say that the trans. is fine. The problem is increasing, it started with a flat spot upon acceleration, now it's complete shuddering/shaking upon acceleration seemingly wanting to die. I've theorized that it might be a lack of appropriate timing under a load therefore pointing at either the coil, ignition module, or the powertrain control module (PCM), Can anyone help me out. My mechanic is at a loss since his scanner just indicated the sensors already replaced.
I saw in another post that the Ethanol was causing the rubber pipe in the fuel filler to dissolve which caused the injectors to get plugged, also the ethanol was causing the plastic lines on the injector octopus to get brittle and crack. This is also a problem with plastic fuel tanks, which causes them to clog up the engine, injectors, and valves.
Posted on Nov 30, 2011
Other problem areas to check are a clogged catalytic converter and rear axle gear oil level (Astro/Safari axle seals leak causing shuddering under load and eventually seizing).Also GM's have had strange intermitent engine and trans problems that dissapear after replacing the main fuses. Check with a GM dealer for TSB's for your truck.
Posted on Feb 05, 2009
a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Apr 12, 2014 | Cars & Trucks
Nov 06, 2012 | 1999 Dodge Durango
May 17, 2017 | 2003 Holden Jackaroo
Sep 14, 2011 | Chevrolet 1500 Cars & Trucks
Jan 27, 2011 | 2000 GMC Safari
Sep 10, 2010 | 1988 Ford Escort EXP
Aug 17, 2010 | 2000 GMC Jimmy
Aug 05, 2010 | Chevrolet Suburban 1500 Cars & Trucks
Jul 03, 2010 | 1998 GMC Sierra
Jun 12, 2010 | 1998 GMC Sierra
301 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: