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Prev Professional Automotive Repair Technical Discussions for November 14, 2008
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Open Help Requests for GM
Help Request Answers
1995 Buick Roadmaster 5.7L Mechanical VIN: 1123568452
This thing will boil over at the coolant bottle when the temp get to about 210-220. Have tested the thermostate. And it was working normal. I left it out and retested it. Same thing. The impellor on the water pump are not rusted away. bypassed the heater core ...
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1996 Chevrolet Blazer 4.3L Misfire VIN: 1GNDT13W6T
car was brought to us from used car lot with missfire and running bad problem. they had put a used engine in it and could not get it to run right. new plugs,wires,cap,rotor. they had also replaced the injector spider assmy. the missfire seems to go from one ba... Trouble codes: P0300 (random misfire)
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2000 Chevrolet S10 2.2L MIL Lamp on VIN: 1GCCS1946Y
We are atempting to do the crank sensor relearn procedure on this vehicle and P1336 (CKP System Variation Not Learned)code is still present. Snap On MT2500 scanner is reading coolant temp at 80 degrees. Temp on gauge of truck works satisfactory. Went into the ... Trouble codes: P1336 (CKP System Variation Not Learned.), P0463 (Fuel Level Sens CKT signal high/low)
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2002 Chevrolet Impala 3.8L Hesitation, Stall VIN: 2G1WF55K92
Hey gang. Got a pretty simple question for you today (hopefully). Customer complaint is the car hesitates intermittently. He said the longer you drive it the worse it gets. I put the red brick to it and pulled a freeze frame code of P0102 "MAF sensor circuit -... Trouble codes: P0102 (MAF sensor circuit - frequency low)
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2003 Chevrolet Tahoe LT 5.3L ac VIN: 1GNEC13Z83
Hey Guys, We replaced the headliner in this truck yesterday, customer was here this morning saying AC is inop. and worked it before. Manual front and rear air on this beast. Front air blows out defrost vents only no matter what mode the switch is in, AC compre...
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2005 Chevrolet Cavalier 2.2L No Start, Hesitation, Cuts out, Stall VIN: 1G1JC52F05
vehicle does not start well acts like flooded if remove fuel pump relay while cranking it will start and stay running . idles o.k. if accelerate slowly will ruin ok, but if try to hit throttle any more than gradual it will bog down. fuel pressure only drops to...
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2007 Chevrolet HHR LS 2.2L front end VIN: 3GNDA13D47
vehicle has noise while driving in the front end.vehicle has rattling noise in front suspension,while driving replaced front struts and stabiler links and no change,ball joints appear to be fine and sway bar bushings appear to be fine.control arm bushings look...
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2001 GMC Sierra 2500 HD SL 6.6L Misfire, MIL Lamp on VIN: 1GCHK23161
Truck arrived to us after recently having all eight fuel injectors replaced by the local GM dealer. Further investigation indicated the injectors were replaced with customer-supplied 'rebuild' injectors. Upon our initial testing, technician isolated leakback i... Trouble codes: P0202 (Cylinder contribution 2), P0203 (as above 3), P0205 (as above 5), P0208 (as above 8), P1262 (v1800-), V1800 (testing and results)
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2002 GMC Envoy SLE 4.2L no start VIN: 1GKDT13562
the abs light is on the brake light is on service 4 wheel drive light comes on and doesnt start all the time. has anyone seen this problem with ignition swiches that keep failing and is there a fix
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1993 Pontiac Grand Am SE 3.3L ign and fuel VIN: 162NE51N3P
trouble vehicle is 93 pont grand am .originally came two weeks ago for start but would crank. car was parked running condition, customers kids went to school came home two weeks later no start. towed in.checked for spark and injector pulse had none diagnosed i...
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1997 Pontiac Sunfire GT 2.4L Park Brake VIN: 3G2JD12T8V
This Sunfire has a park brake that won't completely release. Rear cables are free, levers free in rear drums, when I pull the front cable back (under car) it releases and stays released. As soon as I pull park brake a couple times(to let self adjuster take up ...
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1997 Pontiac Sunfire SE 2.4L Poor Idle Quality, Hesitation, Cuts out, Misfire VIN: 4G2JB32T8V
Car came in with a intermittent no start and hesitation on take off but will clean up quickly and run fine, found old remote starter horribly spliced in and electrically taped up. Removed entire remote system and no start is repaired. Still have hesitaiton, ne...
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1998 Pontiac Sunfire SE 2.2L passenger compartment VIN: 1G2JB124XW
customer has now returned and when the temperature drops near or below freezing point he must drive with the defroster on full blast or all windows fog up and he cannot see out. the trunk is dry now as well as the trunk to the touch. we find no water leaks, th...
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2001 Pontiac Montana 3.4L Cuts out VIN: 1GMDX03EX1
jerks in the morning until warm also has tach jumping while surging not like ign miss but as missing on all cyl same time
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Fixes & Summaries for GM
Fix/Summary Answers
2001 Buick Century Custom 3.1L odometer and shift indicator VIN: 2G4WS52JX1
This car came in not being able to see the shift indicator or the odometer they would not light up. I had put in one from a salvage yard that the customer brought in. as most of you said it was that this other cluster was bad. Customer is a used car dealer and...
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2002 Buick Regal LS 3.8L MIL Lamp on VIN: 2G4WB55K62
Thanks for all the (24) replies. There were a variety of suggestions including exhaust leaks, reflashing the computer, MAF problems, air leaks etc. Many of the replies mentioned that the O2 sensor(s) should be replaced when replacing the cat on these GM vehicl... Trouble codes: P0420.
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1995 Cadillac DeVille Concours 4.6L ride control VIN: 1G6KF52Y9S
the aftermarket struts for the road sensing suspension came with coiled resistors.the one one the left side had burnt. it was to measure 2.1-2.8ohms. it measured 2.1 which was in spec. so sInCe i was only getting code SO13. WHICH IS FOR LEFT FRONT DAMPNER SOLE...
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1995 Cadillac Fleetwood 5.7L cooling fans stay on VIN: 1G6DW52P1S
THANKS TO ALL THAT REPLIED. WELL, IT TURNS OUT I COMPLETELY WAS CHASING MY TAIL. I ORIGNALLY HAD THE TECH 2 HOOK UP FOR AN ABS CODE AND THEN LOOKED INTO THE HEAT PROBLEM. AS IT TURNS OUT THE FANS STAYED ON BECAUSE OF THE TECH 2 BEING HOOKED UP. UNPLUG THE SCAN... Trouble codes: 43 (knock sensor circuit).
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1998 Cadillac DeVille Concours 4.6L Battery Draw VIN: 1G6KF5497W
Several of you mentioned pulling fuses to isolate the problem, that is how we got to the body computer. Behind the rear seat is a collection of modules and relays. If you disconnected the BCM all draw stopped. You could unhook several of the modules and rel...
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1968 Chevrolet corvette 427CID Wipers VIN: 194678S403
Thanks to everybody that replied to my post we have repaired this vehicle. I would especailly like to give thanks to the people who sent me diagrams and articles on this system, you know who you are. The wipers will not operate until the wiper door is fully o...
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1986 Chevrolet Corvette 5.7L clutch master/slave cylinder VIN: 1G1YY0785G
well, i'm done beating this dead horse. i've done the bleeding technique mentioned from the responces. still acting up. short of taking the entire thing out, submerging the entire assembly in brake fluid, and reassembling while submerged, i've tried everyth...
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1994 Chevrolet C2500 Cheyenne 5.7L rear brakes VIN: 1GCGC24K7R
Didn't mention there were no leaks in brake system, although rear wheel cylinders did have a little seepage but not enough to even show fluid. Ended up installing GM shoes and new hardware. Resurfaced the drums and now rear brakes are ok. Thanks for all the go...
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1995 Chevrolet S10 2.2L head gasket VIN: 1GCCS1448S
Thanks for all of the rsponses. Everyone said to buy the truck, which I did. I ended up giving him $500. There was no coolant in the oil, oil psi was OK.. It did have compression in the cooling system, as suspected. Compression test was OK, one cylinder wasa l...
24
1997 Chevrolet Monte Carlo LS 3.1L MIL Lamp on, EGR low flow VIN: 2G1WW12M4V
Thanks for the advice to all replied. Sorry about the dyslexic 401-410 mistake but I did descibe the code correctly and entered it correct in the description area. Only clear probable cause after reading replies was egr port semi clogged. I scheduled the custo... Trouble codes: P0401, P0134.
21
2000 Chevrolet Astro 4.3L prindle VIN: 1GCDM19W3Y
Sorry, I didn't get back sooner. Vehicle was on back burner, after further dianognss found prindle power wire to dash from fuse box in vehicle tapped into a strob light accessary which was used with a tap connector which cut through the wire and wasn't sending...
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2003 Chevrolet Suburban 1500 LS 5.3L steering wheel VIN: 3GNFK16ZX3
Well I asked the customer if the condition was there before the tires were replaced and he said no. He had kind of suspected the tires and mentioned he had other issues with the tires .He will be going back to to where he bought the tires for possible warrant...
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2004 Chevrolet Cavalier LS 2.2L Safety VIN: 1G1JF52F94
I install new door ajar switches & the car seems fine, customer pick it up 2 days ago & no complain
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2007 Chevrolet Silverado 2500 HD Classic LT 6.0L noise VIN: 1GCHK23U37
Thanks for all the help the problem was in rear planetary set of transmission. Changes in design causing problem with lube to rear planetary set of transmission. Thanks again. Fred [...]/Cortez Auto Repair.
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1995 GMC jimmy 4.3L No Start VIN: 1GST145698
HAD A FEW REPLTS ABOUT FUEL PUMP BEING THE PROBLEM , BUT I HAD 5 REPLYS ABOUT THE WIRE HARNESS AT THE BACK OF THE MOTOR AND BINGO THERE IT WAS , ALL IS WELL THANKS TO ALLL , YOU ARE ALLL GREAT KEVIN [...]
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1998 GMC C1500 Sierra SL 5.0L Hesitation, Misfire VIN: 1GTEC14MXW
Don from CA put me on the right track on this one.We disconnected the cam sensor and handed the truck back to the customer.A week passed and no trouble so we changed out the sensor.Its been another week and he called to report all is well.The one thing that I ...
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1998 GMC Savana 2500 4.3L Surge VIN: 1GTFG25W2W
Cat. converter was the problem, not glazed over as I suspected but is was busted up and plugging itself. Special thanks to Tim for the long reply that helped diagnose the problem.
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1998 Pontiac Sunfire SE 2.2L MIL Lamp on, Eneven cranking VIN: 1G2JB1241W
Thanks for the replies. I did perform the CKP Relearn the first time the vehicle was in. The engine runs perfectly smooth and has plenty of power when driving so I am discounting a bent rod and/or Cam/Valve timing. I can't do any starter testing until... Trouble codes: P0335 (CKP sensor circuit), P0342 (CMP sensor signal circuit signal low).
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