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Prev Professional Automotive Repair Technical Discussions for July 17, 2009
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Open Help Requests for GM
Help Request Answers
2000 Buick Century Limited 3.1L cluster VIN: 2G4WY55J4Y
is there a way to display mileage via tech 2 when the odometer is not visible in cluster
1973 Chevrolet corvette 5.7L Mechanical VIN: 1Z37J3S431
good afternoon. i brought this car from flordia which was flatbedded , the brake light was on when i got it. i put a new master clyinder and one rear caliper cause i could not open the bleeders on it and the brake pedal was soft. i put on pads and rotors all t...
1997 Chevrolet K1500 5.7L Power brake VIN: 1GTEK14RSV
Truck come in with hard brake pedal on panic stop, normal breaking OK, with pedal hard let off some pressure pedal goes down and stops truck.
1998 Chevrolet Tracker 1.6L No Start
Hi Guys, I got ticked off over this vehicle this afternoon and walked away from it. I was in a hurry to get it done when things turned to crap! Let me start from the beginning. The truck was towed in. It started once and idled but would not accelerate. I tri...
1998 Chevrolet K1500 Cheyenne 5.7L Misfire VIN: 2GCEK19RXW
This p/u came in with service engine soon light on. Codes were p0300 and p0306. The plugs, wires, cap, rotor, were replaced. Checking misfire data on my scan tool afterwards cyl. 6 still would misfire when pick-up ran under 1000 rpm. We then replaced #6 fuel i... Trouble codes: P0300, P0306
1999 Chevrolet S10 4.3L Hesitation, Surge, Cuts out, MIL Lamp on VIN: 1GCCS14X3X
AllData, as far as I can tell, has decided not to put information about cars in there product anymore! I could find no resistance-temp chart to test this IAT sensor in the SomeData. :-( Does anyone have a chart? I was also looking up a time belt labor in the ... Trouble codes: P0101, P0300
2000 Chevrolet Impala 3.4L Misfire VIN: 2G1WF52E13
ghood morning fellow techs to make along story short this car came in a couple weeks ago w/ a svs engine light checked it out need a egr customer said she talk to husband and get back to me.Didnt hear from then till they came back w/ a new valve(installed by h...
2001 Chevrolet Malibu 3.1L parklamp control VIN: 1GND52J016
sets a code B2585-Park lamp control circuit driving down the road the service vehicle soon light comes on and the park lights flicker erratic on off on off not consistant like alarm is going off
2003 Chevrolet Corvette 5.7L Stall VIN: 1G1YY12501
thanks in advance this zo6 will run ok then it will cut out the c.e.l traction control, air bag. the info display says service trac assist,service air bag,abs,the dash lites flicker like i am loosing power or ground. i have checked power and grounds all are go...
2003 Chevrolet Silverado 2500 HD 6.6L No Start VIN: 1GCHK23113
This vehicle came in last week and the customer stated. Intermittently the engine will turn over but not start. This happens when the engine oil gets low. He has had this problem a couple times. Adding oil has cured it. The last time he added a quart and the v...
2006 Chevrolet Express 2500 4.8L Flasher Fuse VIN: 1GCGG25V86
customer keeps replacing 15 amp flasher fuse (#14) in underhood fuse block. he brought the vehicle to us. we replaced flasher module because we have seen lots of problems with those. keeps blowing fuses. takes days and sometimes weeks before blowing fuse. this...
2006 Chevrolet HHR LS 2.2L Suspension VIN: 3GNDA13D16
cust complaint was bumping sound in front end,went through tsb 04-04-08-006c,fond ctrl arm bushings tearing,replaced left and right arms,noise still there,took end links loose at sway bar,no noise at all,took bushings out and silicone greased them,noise better...
1997 GMC K2500 Suburban 5.7L radio VIN: 1GKFK16ROV
Got a weird one here,need some help from the GM Gods.customer says radio will start playing on it,s own if it is raining,thus running battery down when truck is parked.ran water hose over trck. for 30 mins. or more yesterday,nothing would off ev...
2004 GMC Sierra 3500 SLE 6.6L oil pressure VIN: 1GTJK33224
OK, very simply; The turbo bearing was making noise, nothing else was wrong with the truck. The customer bought a new turbo and brought it to me. I replaced the turbo. It took many, many hours but no real significant setbacks or problems during installation. I...
2003 Other GM motorhome 5.3L evaporator
Vehicle came in not blowing cold. i checked pressures and it seemed a little low; 22 and 200. because i didn't know how much or what was in the system, i evacuated into our old machine we use just for situations like this to avoid contamination. i recharched w...
1995 Pontiac Firebird Formula 5.7L Stall VIN: 2G2FV22P4S
This firebird seems to be destroying distributers. The last reman delco lasted a few thousand miles. I routed the vacuum intake hose to the interior of the vehicle to eliminate possible contamination and had same result. There is not coolant or oil getting in ... Trouble codes: 16 (low resolution failure), 36 (high resolution failure), 42 (est grounded)
2001 Pontiac Grand Prix SE 3.1L Hesitation, Poor Fuel Economy
This car came in with the complaint of sag or lack of power while accelerating during highway driving. Three of us took the car out and drove it. One said "there isn't anything wrong, it's just a dog". While the other two of us noticed that around 2000 rpm and...

Fixes & Summaries for GM
Fix/Summary Answers
2001 Cadillac Catera 3.0L timing belt VIN: W06VR54R41
Thank you to all who replied. I did find timing diagrams and after pulling the front of the engine down the marks all lined up as the diagram had listed. I ran a compression test and the left bank had 140 psi average compression and the right 25 psi average....
1997 Chevrolet Blazer 4.3L Unknown VIN: 1GNDT13W3V
Thanks for the help, it was the ignition switch that was the cause of this. Replaced switch and all is well, thanks again
2000 Chevrolet Impala 3.4L power steering VIN: 2G1WF55E7Y
i took your advice and replaced both rack and pump with oem,works fine now.thank's every one for the advice.
2003 Chevrolet Silverado 2500 6.0L abs/air bag light VIN: 1GCHK29UX3
Thanks to both Robert and William for their replies. What I didn't tell you guys was this truck was brought in by a Used Car dealer. Not having a Red brake light (even with the emergency brake pulled) or a yellow ABS light seemed a little strange to me exspeci...
2003 Chevrolet Trailblazer North Face 4.2L No Start VIN: 1GNDT13S23
NOT A COMPLETE FIX BUT THE TRUCK DOES RUN NOW!!! We purchased another used PCM and installed it into the truck, did a security relearn and the truck started. Checked the VIN in the PCM and it was for an '04 and not an'03. Test drove the truck and the tran...
2005 Chevrolet Cobalt 2.2L front end VIN: 1G1AK52F15
First of all, thank you for all that replied. The vehicle ended up needing the steering column replaced. There is a bulletin on this. Hugo and Dante were right on. The noise comes from inside the electric power steering assit under the dash, the gears that are...
1996 GMC Sonoma SL 2.2L Misfire VIN: 1GTCS1443T
2000 Oldsmobile Intrigue GLS 3.5L engine VIN: 1G3WX52H4Y
Thanks to everyone that took their time to respond. The responses were great and filled with information. This car was purchased shortly before it came to us and had a used car aftermarket warranty. Neither the warranty company nor the owner would authorize fu...
2000 Saturn LS2 3.0L Compressor VIN: 1G8JW52R4Y
First of all thanks to Greg and William for taking the time to leave a reply. I looked at this car with a fresh mind the following day. I knew my a/c clutch had an open so I moved on to pin point the other problems. I picked the PO1283 APP 2 sensor high/ op...
2002 Saturn Vue 3.0L MIL Lamp on VIN: 5GZCZ63B02
Hi and good Friday afternoon to all. Yes this vehicle is fixed, NO, I did not fix it. Using all information gained from this request, I inspected connections behind kick panel, absolutely spotless. That was disappointing. Cleaned throttle plates, inspected con... Trouble codes: P0638 (tac command performance), P2119 (throttle closed position performance), P0700 (transmissioncontrlo system fault), P2101 (tac error).
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