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Open Help Requests for GM
Help Request Answers
1987 Buick Electra 3.8L No Start
This car was towed in from another shop with a no start condition. The previous shop changed the timing chain, cam interruptor magnet, cam sensor, crank sensor, crank sensor pigtail, ignition module, coil pack assembly, and the Ecm. I've gone over the alldat...		 View
1999 Buick Park Avenue 3.8L not sure
car originaly brought in early june/low on freon found no leaks.refilled and sent it on its way.came back early july blowing warm. 1/2 lb low but again found no leaks [ dye was installed at original service ]. seemed to cool ok but before it left our lot it be...		 View
1989 Chevrolet S10 Blazer 4.3L Hesitation, Cuts out, BACKFIRE
This vehicle has a hesitation/cut out at tip in till about 1/4 throttle, after that no problem accels fine. very noticeable when you put our foot hard into the throttle. Hesitates and or almost cuts out and then will backfire about 50% of the time. If you ease...		 View
1996 Chevrolet Cavalier 2.2L starter
what do you think? I baught a car with engine seised just for the sake of rebuilding my first engine. Note that this car was owned by a customer of mine. So i rebuilt engine with new everything exept block and head. When i put the engine in and everything seem...		 View
1998 Chevrolet Blazer 4.3L EBCM and BPMV
This vehicle is leaking brake fluid out of the EBCM. I removed the EBCM and there was fluid in the EBCM and brake fluid poored out between the EBCM and BPMV. The question I have or what I understand researching the ABS system is that there is supposed to be NO...		 View
2002 Chevrolet Blazer 4.3L engine
Vheicle was brought in for dying during the hottest time of day but would restart right away. found that the coolant temp was running at 245 f. and the intake air was running around 197 f. replaced fan clutch and theremostat and battery. Test drove and everyth...		 View
1996 GMC Yukon 5.7L all shift ranges
help transmission techs, I just bought this 96 yukon and it went great for about a week then yesterday as I was driving it suddenly dropped out of gear while driving. All gears were gone. checked fluid is good and no burn smell. It doesnt feel like it is slipp...		 View

Fixes & Summaries for GM
Fix/Summary Answers
2000 Chevrolet Impala 3.8L Trunk Open Light
Men-thanks for all the responses-a new BCM repaired all the electrical maladies this vehicle had. Thanks again. Mike		 9
2002 Chevrolet TrailBlazer 4.2L Starting
Hello everyone. Thank you for the replies. After reading the replies and becoming stumped with my own conclusions i took the advice of several techs and put an ignition switch on this vehicle and that was it! I stated I had bypassed one of the ignition circ...		 6
2003 GMC Sierra 5.3L ac controls
thanks to all who replied. I took vehical to chevy dealer and they said it was a bad fuse block not sure I understand they said that it was stopping voltage to acturator. I thought I checked voltage but it is fixed and gone so thats what matters		 8
2003 GMC Sierra 4.3L temp at vents
Thank's for all the help responses.It was a bad temp actuator motor on the bottom of dash in center.Thank's again for all the help you guys are the best. jim		 9
2001 Oldsmobile Silhouette 3.4L Surge
Well, if I had read my own post, the answer was right there in front of me...the TCC is shuttling. I have seen this on a number of GM 440-4t60-etc units. The rest of the problem lies in the fact that the 1811 code demonstrates a pressure problem inside the tr... Trouble codes: PO449 (evap system), P1811 (max adapts long shifts).		 3
2001 Oldsmobile Alero 3.4L MIL Lamp on
So there must be a flap or ball in the tank or filler neck. You need a gas cap adapter for certain GM products to properly pressure test system. Trouble codes: p0440 (Evap large leak detected).		 4
1995 Saturn SL 1.9L Stall
Vehicle seeems to be fixed. I replaced the EGR and no more codes. I also removed the IAC and cleaned it thoroughly. Idle seems to be able to stabalize now. Turns out the problem with the a/c was the fan had a bad ground and wasn't running all the time. When th... Trouble codes: 32 (53 -), 53.		 7
1999 Saturn SL 1.9L MIL Lamp on
This vehicle is all fixed. Mark gave me the info I needed in about one hour. The problem ended up being a bad connector. The number 2 wire which is the PCM to DLC communication wire was bad inside the DLC. I was back probing it, and it read like MArk said ...		 3
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