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Prev Professional Automotive Repair Technical Discussions for March 27, 2009
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Open Help Requests for GM
Help Request Answers
1995 Buick Riviera 3.8L Hesitation, Cuts out, Stall, Misfire VIN: 1G4GD22165
i got a 95 riviera that came in for running rough. checked for codes and it had P1361 and P1670. when you start the vehicle it starts and runs ok but when you power stand it or drive it it starts bucking and poping and will not accelerate. on the scan data it ... Trouble codes: P1361 (ignition control malfunction), P1670 (quad driver4 malfunction)
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2003 Buick LeSabre Limited 3.8L ABS/ TCS lamps VIN: 1G4HR54KX3
this lasabre has a intermitant ABS, TCS lamps coming on issue. they come on and go off at will. everytime I check for DTC's there are no DTC's present. customer brought car in with both lights on and left it running. I scanned with auto enginuity PC based scan...
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1991 Chevrolet Corsica LT 3.1L MIL Lamp on VIN: 1G1LT53T3M
CAR CAME IN WITH INTERMITTANT STALL WHEN HOT CHECKED MAP CHANGED CRAN SENSOR REPLACED COMPUTER NOW NO LONGER STALLING. CUSTOMER PICKED UP CAR AND RETURNED NEXT DAY WANTING OIL LEAK REPAIRED. OIL LEAK WAS FROM THE INTAKE MANIFOLD. REPLACED GASKETS AND ALSO RESE... Trouble codes: 15 (temp sensor open)
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1995 Chevrolet Camaro Z28 5.7L wipers VIN: 2Q1FP22P9S
Help!! This Camaro is giving us (And the Owner)fits!! It intermittently has a "ticking" noise coming from the wiper motor that sounds similar to when the intermittent wipers cycle. It happens with the wipers in the off position and will sometimes start the ryt...
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1999 Chevrolet S10 LS 2.2L No Start VIN: 1GCCS194XX
This one was towed in for a crank no start. i installed my fuel pressure gauge and attempted to start the vehicle. Fuel pressure is at 45psi,but the engine sounds like it has no compression, and is popping through the intake. my first thought was a timing chai...
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1999 Chevrolet C1500 Suburban 5.7L MIL Lamp on VIN: 3GNEC16R3X
Vehicle was previously serviced for EGR codes with a replacement EGR valve from NAPA. Came back with MIL, p404 Digital EGR system open performance. Replaced gasket with screen gasket. Came back, while checking valve for malfunction, ear broke and valve was rep... Trouble codes: P0404
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2000 Chevrolet Impala 3.4L Temp Gauge VIN: 2G1WF55E5Y
The car came in for fluctuating temp gauge. Found water pump and lower intake leaking. Repaired and I still have a temp gauge moving around. I have a napa block tester and have tried block testing it at various temps it will not turn yellow!! I tried using a l...
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2001 Chevrolet Silverado 1500 4.3L Poor Idle Quality, Hesitation, Surge, Misfire VIN: 1GCEC14W91
Hey Guys, My Alldata computer is down again and I have this 4.3 chev pickup with a bad random missfire in 1 and 2 cylinders. I have since put AC Delco plugs wires cap and rotor but have also discovered that it has some stupid readings on the Sensors. Such as C... Trouble codes: P0300
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2001 Chevrolet Silverado 2500 HD 6.6L MIL Lamp on VIN: 1GCHK29121
wanted to know if anyone has this issue and does anone know if intake heater can ruin a new controler help desprate customer is becomming a pain in the a## Trouble codes: P540, P380
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2003 Chevrolet Malibu LS 3.1L cylinder head VIN: 1G1NE52J63
thanks in advance: we had this car come in [...] ago, 14k miles ago with a dead cylinder and major noise under the rear valve cover. the rocker bolt on the intake valve had pulled out of the head threads and all on the #5 cylinder. we installed a completely...
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2003 Chevrolet Silverado 2500 HD 6.6L No Start VIN: 1GTHK23123
Truck has extended crank time when and if it does start. Trying to prime fuel system does not help. It will always start and run by using carb cleaner or WD-40. I dont like using starting fluid if i can help it. Once it starts, it runs good and drives down the...
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1997 GMC K3500 Sierra SL 7.4L Misfire VIN: 1GTHK33J0V
Hello folks. I hope someone can help with this one. A year ago it came to me for backfiring, poor running etc. The garage that installed the engine gave up trying to rectify. Customer complaint of spitting and coughing intermittant-was worse cold, but now all ...
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1998 GMC C1500 Sierra SL 5.7L No Start VIN: 2GTEC19R2W
Thank you in advance for all replys,Truck came in for a no start at times scanned all systems and found code one code in history B2960. Installed a new ignition lock and also a new ignition switch assy. Tried to do a auto relearn and no luck.cycle on key and s...
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2002 GMC Yukon XL 1500 SLE 5.3L Stall VIN: 1GFK16Z52J
Well we have a mystery here. Customer came in about 2 months ago and said that his 02 Yukon XL Vin Z would die when he went to pass some one and it wouldn't just cruising 55-60. We just came in today and said it was still doing the same thing. Customer then st...
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1995 Oldsmobile Cutlass Supreme 3.1L MIL Lamp on VIN: 1G3WH5ZM55
this is my sons car and i am unfamiliar with gm cars. borrowed otc scan tool and read faults fault stored for egr solenoid 3 error stored and not present. r and r egr valve. mil light still comming on. r and i egr valve. ran top engine cleaner through egr port... Trouble codes: 77 (egr soleniod 3 error)
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1997 Oldsmobile Aurora 4.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G3GR62C4V
This car is one of those that doesn't want to leave. Plugs and wires were replaced for arcing out, that repaired the miss under load, but now I had lean codes. That turned out to be the plenum gaskets, but that's where the problem started. The first set of gas... Trouble codes: P0300
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2002 Oldsmobile Intrigue GLS 3.5L interior lights VIN: 1G3WX52H42
Hello, this Intrigue has no interior/courtesy lights. The lights will ocasionaly work, but usualy they do not work, and will after a few minutes blow the fuse. Thanks, Tom
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Fixes & Summaries for GM
Fix/Summary Answers
1994 Cadillac DeVille 4.9L Surge, MIL Lamp on VIN: 1G6KD52B0R
thanks you all whom replied, oil damage the insulation causing a short main engine harness(outside look nice and dry,not on the inside)Thanks Raymound. Trouble codes: P0041, P0053.
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2002 Cadillac Escalade 6.0L Rattling noise VIN: 1GYEK63N32
Due to the misfire codes, we were leaning toward valvetrain damage & would address the carbon problem when the heads were off, but alas, the vehicle was not to return. Customer was finally reached today, & he states that while on road, engine developed a "lowe...
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1977 Chevrolet Corvette 5.7L relay VIN: 1Z37X7S447
THANKS TO ALL WHO RESPONDED, MIKE & STEVE HIT IT RIGHT ON!! IT IS THE RELAY FOR THE SECURITY SYSTEM, WE MONITORED THE WIRES WHILE WORKING THE LEFT DOOR LOCK CYLINDER AND ONE WIRE RESPONDED TO THE CHANGES. NEITHER US OR THE CUSTOMER KNEW IT HAD SECURITY. TH...
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1996 Chevrolet Camaro 3.8L harmonic balancer VIN: 2G1FP22K9T
it was one of those days when thinking must have been a problem, and i had a thinking one for sure.anyway all that needed to be done waas to remove pivot from puller and install a push rod[cut to fit] insert into puller and in to crnk hole and came out rosy. w...
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1998 Chevrolet C1500 Cheyenne 4.3L Poor Idle Quality, MIL Lamp on VIN: 1GCEC14W8W
THANKS TO ALL WHO TOOK THE TIME TO REPLY. A COUPLE OF YOU GUYS WHERE RIGHT ON.ONCE I CLIMBED UP UNDER HOOD THE RIVETED PIECE BELOW THROTTLE PLATE WAS MISSING AND AIR WAS GOING THRU HOLES.REMOVED PHELUMN AND PIECES LEFTED IN THERE.REPLACED T/B AND ALL IS WELL T... Trouble codes: P0101, P0108, P0304, P0507.
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1999 Chevrolet Blazer 4.3L gauges, lights VIN: 1GNDT13W3X
sorry for the delay in posting an update or fix, customer needed vehicle back and has since missed 3 appointments for re-inspection, vehicle has not acted up again for him, so it's obviously not high on his priority list. I plan to disconnect the IPC next whe...
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2001 Chevrolet Silverado 2500 HD 6.6L Drops to neutral VIN: 1GCHK23181
This baby is fixed. Thank ALL of you for replying. I checked for power loss from ignition switch, which I didn't think was occurring because the pnrdl never malfunctioned. I did so at the fuse panel, always had charging volts. I rechecked for loose rear shaft/...
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2004 Chevrolet Silverado 2500 HD 6.6L 2-1 downshift VIN: 1GCHK232X4
I received 5 replies that mentioned possible sticking valve or solenoid in trans, sticking drive shaft yoke, re-flash, worn transfer case housing, or over sized tires. My problem is this does not occur often enough to pin down what is wrong. There is no curren...
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2004 Chevrolet Avalanche 1500 Z66 5.3L transfer case VIN: 3GNEK12T24
This is a great system.It finally came on when i could scan it.The problem was the shift motor sticking sometimes.Code 3027 in history finally showed up.Replaced motor and all is well.Thanks to all.
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2007 GMC Envoy SLE 4.2L stabilitrac VIN: 1GKET16S86
Thanks for everyone's help. Sounds like in addition to programming issues and sensor replacement a TECH 2 will be required to complete this mission and since I don't have access to one we referred this one back to the dealer (unfortunately), something that we...
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1994 Pontiac Grand Prix SE 3.1L Stall, MIL Lamp on VIN: 1G2WJ52MOR
Thank you to all that sent info. After having time to get back to it I installed a pcm and she runs like a champ. Trouble codes: 86 (Analog/Digital ECM error).
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