Question about 2001 GMC Sonoma Extended Cab
I need directions for replacing a fuel pump on a gmc sonoma 2001 pick up
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Posted on Jan 02, 2017
SOURCE: in-the-tank fuel pump r&r
Here are instructions for replacment with a diagram of the fuel pump components my only suggestion would be instead of draining the tank and dropping the fuel tank if you unbolt the box and using a jack and and some wood lift the fuel tank side of the box this will give you access to the tank and fuel pump/ sending unit. It will save you time and the hastle of replacing the tank straps which are prone to snapping at the threads when trying to remove the nuts.If these brake you will have to replace them.
Posted on Nov 20, 2008
WARNING: THE FUEL SYSTEM IS UNDER A CONSTANT PRESSURE (EVEN WITH ENGINE OFF). BEFORE DRAINING FUEL TANK, FUEL SYSTEM PRESSURE MUST BE RELEASED.
Two different procedures may be used to drain fuel tank (removing fuel vent hose at fuel tank or using DRB scan tool).
The quickest draining procedure involves removing fuel vent hose at fuel tank.
As an alternative procedure, the electric fuel pump may be activated allowing tank to be drained at fuel rail connection. Refer to DRB scan tool for fuel pump activation procedures. Before disconnecting fuel line at fuel rail, release fuel pressure. Refer to the Fuel System Pressure Release Procedure in for procedures. Attach end of special test hose tool number 6541, 6539, 6631 or 6923 at fuel rail disconnection (tool number will depend on model and/or engine application). Position opposite end of this hose tool to an approved gasoline draining station. Activate fuel pump and drain tank until empty.
If electric fuel pump is not operating, tank must be drained by removing fuel vent hose. Refer to following procedures.
Fuel PUMP REMOVAL
WARNING: THE FUEL SYSTEM IS UNDER A CONSTANT PRESSURE (EVEN WITH ENGINE OFF). BEFORE SERVICING FUEL PUMP MODULE, FUEL SYSTEM PRESSURE MUST BE RELEASED.
The fuel pump module is located in top of fuel tank.
CAUTION: Whenever fuel pump module is serviced, the module gasket must be replaced.
Posted on Mar 14, 2009
i had the same problem with my 96 sonoma, just died anywhere at anytime, even happened to shop mechanics. They checked fuel and spark, there was none. Ended up putting a new computer on it and it has not happened again. The computer was not communicating with anything, just be sure that you get new comp. programmed to your vehicle. Had to send mine out and get done
Posted on May 13, 2009
On the 2001 gmc jimmy 4.3L v6 engine there are two air pump check valves: there's a pipe (about 1" diameter) that comes off each of the exhaust manifolds. the check valves are screwed onto those pipes. then a rubber hose (about 1.25" outside diameter) is clamped to the front of each check valve and connects to the air pump, which is hidden behind the vehicles grille in front of the radiator. typically, if you need to replace these (the life expectancy is about 3-4 years), it starts a chain of events that might be as follows: during the wintertime, water from the exhaust leaks through the worn out one-way check valves, and ends up in the air pump. the water freezes, and the ice jams the air pump, which may or may not ruin the air pump, but which usually blows the air pump fuse, which is impossible to find if you're rummaging around the passenger compartment fuse box or the under-hood fuse and relay box. it ain't there! so if you're looking under the hood leaning up against the front bumper, slide to your left around the passenger side headlight. now you should be looking at the battery, leaning up against the passenger side fender. look down between the battery and the fender. you have to push a few things out of the way, but there you will find a green 30 amp blade fuse (about 1" x 1" fuse--and $2.99 at autozone). this blown fuse should have triggered the check engine light and a DTC (diagnostic trouble code) of p0410 (secondary air injection system). for that vehicle there is a TSB (technical service bulletin) put out by gm (bulletin # 04-06-04-015; march 2004). if you want to print out some literature about all that i've mentioned just surf on over to http://www.obd-codes.com/p0410 for more links and documentation. my credentials: self-proclaimed auto mechanic for 26 years (sorry, no ase certification yet [but still trying to find time to study for the tests]) and college dropout (after 3 years of electrical engineering)--so, in other words, don't believe a word i say; just go to that website and get it straight from the horse's...
Good luck and hope this helps. I know you have a Sonoma but we have the same platform. I am thinking of buying a set of headers without the Air injection system and having the jimmy dyno tuned again to eliminate the service engine light and recalibrate the ECM to eliminate the air injection pump.
Posted on May 25, 2009
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