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1997 GMC Savana Questions & Answers
Fuel pump won't work. On 1997 GMC Savana 5.7. What sends signal to the fuel pump relay to make the fuel pump to work?
The fuel pump receives signal to pump from the ECU, but firstly, you need to find out whether the pump is working, does it cycle when you turn the key on with a whiring noise or sound. This is the initial priming, where the pump turns or cycles to create pressure in the common rail or injectors prior to the actual startup when you turn the key to start engine position. If fuses are all ok, go by process of elimination. unplug the feed to the pump, usually under back seat of a sedan or at back of a truck and use a tester or test lamp to see if there is voltage to the pump. if there is, next power the pump with 12volts directly from battery at the points where the power shows on the supply plug of the pump but keep the feed plug off preferably so feed the male pins on the pump side of the plug or male plug with female casing fixed to the pump but on pins that correspond to the pins on other plug that supple the pos and neg power from battery. If pump does not run when you feed power to the pins from a battery directly, then the pump is toast. Hope that helps and makes some sense.
1997 GMC Savana cutaway van 3500 fuel filter
cartrigde type is locted at the top of the crossmember just forward of the gas tank on driver side of the vehicle,,,,,,,,non cartradge type located on front of the fuel tank..
I have a 97 gmc
Sounds like an engine sensor problem (could be one of several) - start with an error code (DTC) check with a good code reader and follow up if there are any.
On a 1997 GMC Savana
Look it up here
http://www.bbbind.com/free_tsb.html free wiring diagrams , Enter vehicle info. year , make , model and engine size .
Under system click on engine , under subsystem click fuel controls . Click the search button , then the first blue link . The 7 th diagram down is for O2 sensors . The ppl wire to pin 21 is signal return , the tan to pin 7 is low ref, ( ground ) Tan / white pin 26 low ref.(ground ) PPL / white pin 22 signal return .
Replaced clutch. then went to start no spark.
Make sure you did not get any wires pinched between engine & bellhousing this is common.If it started and ran before doing clutch, nothing you did should change that! Are all wires back on starter motor?
When front air is on rear heat always
If you have owners manual check that your climate control settings are as you expect them to be, if that makes sense. Some on Fixya do not realise they gave climate control , they think they have normal A/C and try to correct chimerical problems. Please check and repost
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