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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for October 24, 2011
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Open Help Requests for GM
Help Request Answers
1997 Cadillac Eldorado ETC 4.6L Theft VIN: 1G6ET1293V
First off thanks, Car displays on info centre Theft system problem. car will no start. It gives me a exp 34 code. which i cant find info on. It will start and die within 3 secs. The prndl lights are flashing on the cluster. Hvac controls dont work or light up....
2006 Cadillac DTS 4.6L cooling temp VIN: 1G6KD57Y66
Thank you in advance for any help. I got married with this caddy, i took over other tech and became my problem. Im having overheating problems low fan speed starts at 213f and high speed at 230f. After replacing pretty much every single component in this vehic...
2007 Cadillac Escalade 6.2L MIL Lamp on, Reduced power mode VIN: 1GYFK63857
Hello all, I'm having some difficulty with this Escalade. Vehicle will intermittent;y go into "reduced power mode" and set P2101 and P0341. Inspected throttle body, pedal sensor and all wiring. All physically looked OK. Cam sensor RPM on scan tool will become ... Trouble codes: P2101 (Throttle actuator position performance), P0341 (Camshaft position sensor performance)
1999 Chevrolet Blazer 4.3L No Start VIN: 1GNDT13W7X
Hllo everyone, thanks in advance, well here i am with this 99 chevy blazer 4.3l a/t that got towed in to my shop with a non starting situation,it cranks over but don't start. Apparently the customer was driving on the hwy about 50 mph when the truck die he sai...
2000 Chevrolet S10 4.3L MIL Lamp on VIN: 1GCDT14WXY
Hey guys, this S-10 came into the shop last week running really bad under a load. It would sputter and backfire and had no power. Another tech in the shop replaced the fuel pump because the pressure was way under spec, and the problem was still there. He then ... Trouble codes: P0171, P0174
2003 Chevrolet Blazer LS 4.3L Radio VIN: 1GNDT13X43
Had a aftermarket alarm system(removed). If you turn the key halfway off the transmission range display turns on. Also noticed the ignition power mode never displays running it is either off or cranking(even when it is not). The transmission and radio light up...
2003 Chevrolet Silverado 2500 HD 6.6L engine smoke VIN: 1GCHK23173
I've got a customer that has a 03 chev. with a 6.6 duramax that smokes bad at idle in drive and smoke goes away around 1800 rpm. In park it doesn't smoke at all. Put it in drive at idle and it will start smoking badly. When the engine is cold, it doesn't smoke... Trouble codes: P0234, P1093 (Fuel Pressure low while power enrichment)
2004 Chevrolet Tahoe Z71 5.3L transfer case VIN: 1GNEK13Z84
Well this truck has me pulling my hairs i just think its something simple that i am missing. The customer brought me the truck that 2wd and 4wd hi lights where both on so i checked the truck the truck was in 2wd raised it on a 4 post lift i was able to switch ...
2005 Chevrolet Silverado 2500 HD 6.0L Misfire VIN: 1GCHK23U95
Hope to find some help...05 chev has single misfire on cyl 5 at idle ,reach 1500-2000 rpm them #1,6,8 start..# 5 and 8 are the most frequent...plugs been checked..coils checked and swapped with no change ..have tried cleaner for injectors and have just finishe... Trouble codes: P0300
2006 Chevrolet Impala LT 3.5L park lights VIN: 2G1WT55K66
looking for park lamp relay,mod says it could be in underhood fuse box or in rs instrument fuse box,dont see it in either spot,taillights dont work,scan bcm says park lamp switch on and relay on.
2007 Chevrolet Silverado 1500 LT 5.3L Hi speed LAN VIN: 1GCEK19J57
Hi for all, thanks for looking and your time and help. this truck had a short in fog lamp which cause a fire( behind the dash exactly light SW)inside the truck,the harnis not avaliable with same option so I repaired it using another harnis all wires repared us...
2007 Chevrolet Impala LT 3.5L No Start, Poor Idle Quality, Hesitation, MIL Lamp on, Tachometer is inop. VIN: 2G1WT58KX7
This vehicle was brought in for the tach. inop, no power, hard start and check engine light. This car will start somewhat easier after its warmed up. Scanner tested and found P0335 and P0336. Followed flow chart and replaced CKP sensor with new GM - no change.... Trouble codes: P0336 (Crankshaft Position CKP Sensor Performance)
2001 GMC Yukon SLT 5.3L Noise VIN: 1GKEK13T01
Okay guys, this one is driving me crazy! Ive got this Yukon that makes an intermittant buzzing noise from the fuel pressure regulator. The vehicle originally came in with the complaint of low idle and rough running. Another tech here at the shop diagnosed it a...
2005 GMC W4500 Forward W4S042 5.2L Surge, Lack of power VIN: JHDC4J1645
Don't have much experience on these Isuzu diesels. This truck had the original air and fuel filters. The complaint was lack of power climbing hills and a surge at cruise. I checked for codes none found. Low speeds around town no problem, above 40 mph start to ...
2004 Pontiac Grand Prix GT1 3.8L No Start VIN: 2G2WP54214
this car will run and idle normally but if you shut it off it will not start and will lose injector pulse and spark. This happens every now and then regardless if hot or cold. Replaced the crank sensor and same problem. Checked the inputs and outputs on ICM an...
2002 Saturn L300 3.0L MIL Lamp on VIN: 1G8JW54R02
hi everyone, So I have a saturn L300 with a 3.0, code p0128. I know it needs a thermostat but alldata is a little vague on the replacement procedure,looks like intakes have to come off but my concern is the coolant pipe attached to the t-stat housing does it ... Trouble codes: P0128

Fixes & Summaries for GM
Fix/Summary Answers
2005 Buick LeSabre Custom 3.8L Sdm VIN: 1G4HP52K55
Finally. I removed the two purple data wires from the connector of the SDM connected them together and had complete communication.Then connected the two wires directly to the SDM and the system would not communicate pulling the system down.Replaced with anothe...
2006 Buick Terraza CX 3.5L cruise control VIN: 5GADV23L66
Sorry folks- We were told by GM dealer that the EBCM was a plug & play- but it had to be reprogrammed- We did that & cruise problems are all fixed- Wierd- Cruise control would still work when the ABS had a trouble code- but would not work with no ABS codes- ...
1983 Chevrolet C70 C7D064 8.2L slow return to idle VIN: 1GBS7D4G5D
I checked the adjustment of the buffer screw, it was ok. At this time the farmer needs to use it, I will probably get the truck back after harvest and dig into it deeper.
2007 Chevrolet Suburban 1500 LS 5.3L Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GNFK16377
Replaced all DOD lifters and canister shutoff valve. Stabilitrack faults cleared once vehicle was running correctly. Thanks for all the input guys. Trouble codes: P0300 (Random Misfire), P0301 (Cyl 1 Misfire), P0449 (Evap Vent Control Circuit Intermitent), C0561 (ABS Module RAM/ROM Circuit).
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