20 Most Recent 2001 GMC Jimmy - Page 9 Questions & Answers

could be the cat failing can you put the test results on so i can see.

you mean rear axle pinion seal. to change it you need to remove driveshaft. take a torque wrench to see the running torque. then remove center nut ,remove yoke. with screwdriver remove seal; reverse proc. then tight center nut to torque you find before you remove the center nut.

sideshaft seal replacement

Check breather

It should be in the cargo floor area, close to the tailgate. Either lift the carpet and/or look for a compartment door. Or is there a panel on the side of the cargo area. The handle to crank the spare up and down, is there too. If you have a space saver spare, its all going to be together under the carpet. Some vehicles place the jack under the back seat.

If you bought it used, a previous owner may have removed the jack. Hope this helps.

If you put a socket on the crank pulley bolt can you turn the engine over with a ratchet? I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Check for evap codesVent Solenoid

Check for Evap Codes

Got get it scanned for free at your local major parts store. Post the code/s for further instructions.

code p0410 refers to secondary injection system--malfunction===causes wiring--air valve--air solenoid--- ECMcode p0141 refers to heated oxygen sensor-2 bank1-heater control -circuit malfunction===causes --wiring--oxygen sensor--ECMcode p0128 refers to coolant thermostat --coolant temp below thermostat regulating temperature==causes mechanical fault (thermostat stuck open) code p0102 refers to mass air flow (MAF) sensor/ volume air flow (VAF) sensor low input===causes wiring short to ground--MAF/VAF sensor ECM

Your car should not run over 190. As a matter of fact I think you have a 185 degree thermostat. Its very possible that your thermostat is not opening and needs to be replaced. Also check your coolant. Make sure you only used DexCool. Vehicle gets too hot it can blow a head gasket. Warp are crackhead. Or crack your block. So make sure it does not get too hot.

under relay box . some models is under dash near center of dash

Those hoses are located in the same area as the tank filler. There is a set of hoses that go from the gas cap connection to the tank. You have to lower the tank.

I guess you need a better shop that can start over& actually diagnose issues.

For what?

Have you checked base fuel pressure at the injectors ?Base fuel pressure when cranking or at idle should be at least 60psi or more.