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Prev Professional Automotive Repair Technical Discussions for July 14, 2010
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Open Help Requests for GM
Help Request Answers
2002 Buick Century Limited 3.1L Collision Repair VIN: 2G4WS52JX2
Hi all, thanks for looking and possibly helping with some insight. I have changed the BCM under the passenger seat a couple of times and no change. I can't get rid of the U1064 code. My scanner says [ Loss BCM, VTD, DIM, PZM, and/or SMM data. And I don't seem ...
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2003 Cadillac DeVille 4.6L Pw Pmirror Pl VIN: 1G6KD54403
I got this car from a collision shop about 2 weeks ago. They sent it here because nothing worked on the front drivers door. At that time we checked all fuses and connections going to door modules. Then everything started working again. Delivered car back to co...
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2004 Cadillac SRX 3.6L no cranck VIN: 1GYDE63754
Hi Cadi Guys, this SRX came with concern of No crank No start some times or after parking for long time ( more than 2 - 3 hours) DTC test got P1631 theft deterrent , the security lamp falshing in IPC , you try 2 or 3 times and it will run fine, I got a TSB for...
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1995 Chevrolet K1500 Silverado 5.0L Brake Pedal VIN: 1GCEK19H2S
Hello IATN members, I have a 1995 Chevy K1500 with a brake issue. The customer towed in the Truck because the brake pedal went down to the floor. He claimed to have replaced the rear brake shoes and wheel cylinders. I did a inspection to the rear and found he ...
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1995 Chevrolet G10 Chevy Van 4.3L Poor Idle Quality VIN: 1GCDG15Z45
hi all and thanks in advance for any help. i have this 95 chevy van that has an erratic iac valve. engine will idle but then the iac counts go from 20-30 to 122 and the engine wants to stall. i have replaced the iac valve and problem still exists. i have also ...
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1999 Chevrolet Express 3500 6.5L Cooling Systems VIN: 1G6HG39FOX
Hello, I just want to ask if there is a fluid for the combustion leak detector specificly for deisel engines,and if so where to get it or a part number or something.I'm pretty sure this van has head problems but would like to verify.This customer drives about ...
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1999 Chevrolet Tahoe LS 5.7L Misfire, MIL Lamp on VIN: 1GNEK13R9X
My own vehicle bought at 100k miles soon after developed a misfire cyl #8 which turned out to be a sticking ex. valve after research indicated this model has that history. Removed retainer/spring & cleaned guide with throttle body cleaner & problem solved. Lat... Trouble codes: P0304 (Misfire cyl 4), P0307 (Misfire cyl7)
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2000 Chevrolet Silverado 2500 6.0L 1-2 and 3-4 shift tcc lockup VIN: 1GCGK29U3Y
I have a unit that will shift very hard, I would almost consider it a slip from 1-2, 3-4 and TCC lockup when pulling a light load (3000LB trailer)and the trans temp is at 200. When not loaded with a trailer it will shift hard and shudder on TCC lockup only. Th...
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2001 Chevrolet Tahoe LS 5.3L Misfire, MIL Lamp on VIN: 1GNEK13T91
Vehicle came in to me for check engine light and code p0430. Temp tested cats and bank 2 showed slow to light off. Customer took back to exhaust shop and they sent to another shop for cat test? . They don't test cats just replace them! other shop tested cats a... Trouble codes: P0430 (Bank 2 cat converter)
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2002 Chevrolet Venture 3.4L No Start VIN: 1GNDX03E42
Another stumper. This one will loose the fuel gauge, coolant temp drops below cold, abs light on, check engine light on. No communication with scanner. Engine will run untill turned off. Then it goes into a loop only intermittently.This may not happen for days... Trouble codes: U1000 (Class 2 communication problem history), U1040 (Ebtcm communications history), P1626 (Anti theft fuel enable circuit history), U1016 (Loss pcm communications only on air bag history)
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2002 Chevrolet Express 1500 4.3L MIL Lamp on VIN: 1GCFG15X73
This van came in with this code last afternoon, P0016, I attempted to look it up on our Mitchell program but couldn't find any thing on the code. Anyone seen this code & can you direct me to any info to diagnos & repair it? Trouble codes: P0016
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2006 Chevrolet Cobalt LS 2.2L A/c System VIN: 1G1AK55F56
Car came in for a/c not cool while driving. System has full freon charge and pressures are not normal but cools ok at idle. Over 1200 RPM the high side drops to 100psi and the low side climbs to 60psi and then the compressor cycles off. Replaced expansion valv...
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1999 GMC Yukon SLT 5.7L compressor VIN: 1GKEK13R5X
truck came in the shop last week with the a/c not operating efficiently. i dont recall the pressure readings at that time but did notice a big difference in the line temp. on either side of the orifice tube when you would touch it. hot on one side cold on the ...
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2000 GMC C3500 Sierra SL 7.4L Raw fuel at canister VIN: 1GTHC39J7Y
This truck has raw fuel coming out of the charcoal canister. The purge valve seems to be working, and the only code is for an O2 heater. Smoked it and no leaks visible. The only other info the customer has been able to provide is that this is a work truck, and...
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2003 GMC Sierra 2500 HD 6.6L Electronic VIN: IGTHK291X3
This 6.6 with Alison auto came in with ses light on. Codes p0700, u1800, u2104, u2106 were in memory. Customer indicated that he notice a slightly different shift pattern - quicker through the gears. We erased the codes and let him drive it for a few days. Cam...
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2002 Oldsmobile Alero GL 3.4L No Start VIN: 1G3NL52E4C
Hey guys! I would greatly appreciate any input you guys can give me on this one. About a month ago this car came in on the hook with a no start. The security light was on while cranking. We replaced the passlock. It started fine. Today it came in on the hook a...
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1998 Pontiac Grand Prix GT 3.8L Poor Idle Quality, Stall VIN: 1G2WP52KKO
Car drives good but after hot soak will not idle. Must hold trottle down to keep running will clear up after a fiew minnits
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2000 Pontiac Grand Prix GTP 3.8L Stall VIN: 1G2WR5216Y
I'm stuck far away from home with the car in security mode. the security light is not on but the red led is flashing when the ignition switch is turned off. I have a generic scan tool and it only shows pcm codes. does anyone know what would make the red led fl...
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2000 Saturn SL 1.9L 10amp Fuse VIN: 1G8ZJ5276Y
The 10amp fuse for the ac temp switch keeps blowing every time we put a new in. We unplug the Compressor and it will still blow.We can unplug the ac switch and it will not blow until you plug it in. Check wiring. No burnt wires.
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Fixes & Summaries for GM
Fix/Summary Answers
2009 Cadillac CTS 3.6L MIL Lamp on VIN: 1G6DV57V49
Tried a smoke machine to find a leak but it didn't. We replaced the intake gasket just because it wasn't done originally but the light came back. The car has been at the Cadillac dealer the last 2 weeks as we couldn't find the problem and they can't seem to ei... Trouble codes: P2187 (Too lean at idle bank 1 current), P2189 (Too lean at idle bank 2 pending).
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1994 Chevrolet G30 Chevy Van 5.7L Mechanical VIN: IGBJGB1K7R
Thanks everybody for your response.Most of you suggested to try a different oil filter with a anti drain valve,I am going to try this,if this doesn't help we go to plan b with involves checking the main bearings and oil pump, thanks again for all your sugges...
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2000 Chevrolet Express 3500 5.7L Surge, Cuts out VIN: 1GAHG39RXY
Removed pcm and found many wires were corroded as the inside was also after replacing some terminals and the pcm no further issues. thanks for the help
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2003 Chevrolet Tahoe LT 5.3L rear auxillary a/c VIN: 1GNEK13Z33
Greetings techs. I am not going to call this truck fixed although it is working properly at this time. After extensive checks of the components and associated wiring, the system started working as designed. Being unable to find an obvious problem, I took all a...
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2006 Chevrolet Colorado WT 2.8L Vibration VIN: 1GCCS14816
I have checked for proper timing chain alignment. Cam & crank sensor synch ok. Compression, fuel pressure & all the basics check out. The exhaust is repaired with an OE used cat back system assembly and reinforced with a bracket from the trans mount to the ...
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2001 Other GM STEP VAN 6.5L No Start VIN: 5B4KP42Y61
THANK YOU AL [...] WHO RESPONDED ME.THIS TRUCK MUST BE AN EARLY VERSION,IT DID NOT HAVE A PCM NOR THE BOX NEXT TO INJECTION PUMP THE PROBLEM WAS THE INJECTION PUMP SENT OUT TO REBUILD CLEAN THE GAS TANK WAS VERY DIRTY AND BLEW THE LINES PROBLEM SOLVED START LIKE A ...
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1994 Pontiac Bonneville SE 3.8L No Start VIN: 1G2HX52L6R
THANK YOU TO ALL WHO REPLIED TO MY HELP REQUEST.TO UPDATE I HAD NO CODES,GOOD SPARK,INJ.PULSE AND FUEL PRESS.I HAD GOOD COMP.GOOD SQUARE WAVE FORMS ON CKP & CMP,MAF OK KOEO.THE TIMING MARKS WERE LINED UP .BUT I PULLED VALVE COVER AND WHEN I BROUGHT IT UP TO TD...
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2004 Pontiac Grand Am SE 2.2L No start VIN: 1G2NE52F94
INSTALLED A NEW E.C.M. IN CAR,REFLASHED WITH TECH 2,THEN DID CRANK ANGEL RELEARN AND ALL IS WELL,THATS FOR YOUR HELP.
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2001 Saturn SL1 1.9L Filter Gasket VIN: 1G8ZH52861
Three destroyed trans filters and a few hours of free warranty labor later and this one is fixed. Put on a new valve body and all was good. Well the next time I'll know what to do right away. Thanks for all the responses.
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