20 Most Recent 1997 GMC Savana Questions & Answers

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.

try your crank sensour

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..

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.

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 .

Have you checked your battery condition ? Does your vehicle turn over when turning key to start position ?

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?

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

Still could be the pump but you need to see if there is spark and fuel, and if there are any engine codes stored. The more info you can get the closer your get to the solution.

have you tried resetting computer, hot wire off battery for5 mins or so

The code P1345 means "SGC (Cam Position) Sensor Circuit Malfunction/ Crankshaft Position-Camshaft Position Correlation.super vag k+can v4.8 update

nope

the regulator is going bad. replace you alternator.

power window circuit usually on 30amps breaker

Code 402 is a problem with the EGR valve performance, not the O2 sensors.