Passlock

[smdk2500]

On both of my 95's I noticed when the sun hit the dash just right I have the lettering for security on the black portion of the gauges. I know passlock was introduced in 98 for the domestic market. Does any one know when it might have been introduced in the foreign market?

 

[Brian Shanahan]

On both of my 95's I noticed when the sun hit the dash just right I have the lettering for security on the black portion of the gauges. I know passlock was introduced in 98 for the domestic market. Does any one know when it might have been introduced in the foreign market?

The passlock system was introduced earlier in the gm market but was not used in the truck series until 97 when they installed for the first time with the third door as well. All gm gmt400’s cluster do have the security printed on them. My 95 and my 96 has it as well.

 

[kennythewelder]

The passlock system was introduced earlier in the gm market but was not used in the truck series until 97 when they installed for the first time with the third door as well. All gm gmt400’s cluster do have the security printed on them. My 95 and my 96 has it as well.

To add to the post above, not all 97s had it. I think only the later production run models were equiped with it. I have a 97 3 door Silverado that doesn't have passlock. My truck was built in January, 1997, in Canada. It was sold in Lafayette Louisiana at our local Chevy dealer new, in 97. I bought it from the original owner with 85,000 miles in 2002. The only options that the truck doesn't have is, leather, and power seats, although I did a bucket seat swap a few years ago, and added a custom built center console, with a custom built floor shifter. My truck does have every other option offered on a 97, C-1500, including the tow package.

 

[modernbeat]

I recently bought a 1998 Silverado. It should have Passlock. But the keys look like generic cheap keys.
How can I tell if Passlock is still activated, or if it's been tuned out or defeated in some other way?
I assume I could use HP Tuners comparison feature, but I don't have that software.

 

[HotWheelsBurban]

I recently bought a 1998 Silverado. It should have Passlock. But the keys look like generic cheap keys.
How can I tell if Passlock is still activated, or if it's been tuned out or defeated in some other way?
I assume I could use HP Tuners comparison feature, but I don't have that software.

I think the only way you know for sure, is if you can get into the computer PCM enough to find out if it's been tuned out. Other than that, you don't know until the truck decides to make it work ( you try to start it, and it cranks okay but won't stay running but for a couple of seconds, and it continues to do this!). I went through this on my Burb, and the "relearn procedures" only work once or twice. Only thing that makes it go away is to have that function electronically deleted from the PCM. From what I have been told that requires the tuning program/software.

 

[AuroraGirl]

I recently bought a 1998 Silverado. It should have Passlock. But the keys look like generic cheap keys.
How can I tell if Passlock is still activated, or if it's been tuned out or defeated in some other way?
I assume I could use HP Tuners comparison feature, but I don't have that software.

your SPID should have a code for anti theft of some kind

 

[df2x4]

To add to the post above, not all 97s had it. I think only the later production run models were equiped with it.

To add even more to this, I'd go so far as to say that 99.9% or maybe even all '97s don't have it. Over the years I've seen a couple people post that their "1997" has PassLock, but none of them have actually posted a title or VIN info to prove that the truck in question was a '97. I suspect that those folks might have actually had '98s and not known it.

 

[modernbeat]

your SPID should have a code for anti theft of some kind

I've got no RPO for anti theft or security.
There are two for electric door locks, but I thought one was for electric locks and one was for the remote locking.

Here are my RPO codes. Let me know what I should be looking for.
As far as I can tell, my 98 C3500 does not have Passlock.

Model C30953

AG9 ADJUSTER, SEAT, POWER, 6 WAY Driver (most delux seat available)
AJ1 WINDOW TINTED, DEEP, ALL EXCEPT W/S AND DRS
AM7 SEAT, RR, FLDG (rear folding seat)
AU0 LOCK CONTROL, REMOTE ENTRY, KEYLESS ENTRY (DOMESTIC) (keyless locks)
AU3 LOCK CONTROL, SIDE DR, ELEC (electric locks)
A20 WINDOW, RR QUARTER VENT SWING OUT (pop out windows in the rear quarter)
A28 WINDOW, RR, FULL WIDTH, SLIDING (rear sliding window)
A31 WINDOW, POWER OPERATED, ALL DOORS
A95 SEAT, FRT BUCKET, HIGH BACK, PASS & DRIVER RECL (reclining buckets, not 60/40 or bench)
B32 COVERING, FRT FLOOR MATS AUX (front floor mats)
B33 COVERING, REAR FLOOR MATS AUX (rear floor mats)
C60 HVAC SYSTEM, AIR CONDITIONER FRT MAN CONTROLS (manual AC control, front version)
C7A GVW RATING, 10000 LBS (standard one-ton 3500 rate)
DD7 MIRROR I/S, R/V, LT SENSITIVE, COMPASS (inside mirror with compass and dimming)
DK6 CONSOLE ROOF, INTERIOR
D48 MIRROR O/S, REM CONT, ELEC PAINTED (not chrome, remote adjust)
D55 CONSOLE, FRT COMPT, FLOOR (standard length console between the buckets)
E63 BODY EQUIPMENT, FLEETSIDE, PUBX (Fleetside pickup box)
FE9 CERTIFICATION, EMISSION, FEDERAL
GMC PLANT CODE PONTIAC, MI, USA
GT5 AXLE REAR, 4.10 RATIO (DUP WITH GT8)
G80 POSITRACTION REAR AXLE
JB8 BRAKE, POWER, DISC, DRUM 10000 LBS
KNP COOLING SYSTEM TRANS, HD
KW2 GENERATOR, 124 AMP
K34 CRUISE CONTROL, AUT0MATIC, ELECTRONIC
K47 AIR CLEANER HIGH CAPACITY
L29 ENGINE, GAS, 8 CYL, 7.4L, SFI (big block 454 port injection engine)
MT1 TRANSMISSION, 4 SPD, AUTO W/ELECT CONTROLS H.D. (HYDRA-MATIC 4L80-E)
NF2 EMISSION SYSTEM, FEDERAL, TIER 1
NP5 STEERING WHEEL, LEATHER WRAPPED (leather steering wheel)
N33 STEERING COLUMN, TILT TYPE (tilt column)
P06 TRIM DISCS, WHEEL (beauty rings for steel wheels)
R9V Control Sales Item No. 96
SLM STOCK ORDER, PROCESSING CODE
UP0 RADIO, AM/FM STEREO, SEEK/SCAN, AUTO REV, MUSIC, SEARCH, CASS, CD, AUTO TONE, CLOCK AND ETR (RADIO WILL NOT SNAP FIT INTO I/P ATTACHING FASTENERS, CD WILL BE REMOTE MOUNTED OTHER THAN THE IP)
UQ3 SPEAKER SYSTEM, PERFORMANCE ENHANCED AUDIO (not Bose)
VB3 BUMPER, RR, STEP, CHROME, IMPACT STRIP (Rear step bumper, chrome, with trim)
VG3 BUMPER FRT, IMPACT STRIP
VK3 LICENSE PLATE, FRT MOUNTING PKG
VP6 NOISE CONTROL (Hood pad, firewall pad)
VR4 TRAILER HITCH, WEIGHT DISTRIBUTING PLATFORM
VXS VEHICLE COMPLETE
V22 GRILL RADIATOR, CHROME
V73 Vehicle Statement US/Canada
V76 FRONT TOWING HOOK
XHP ALL-SEASON RADIALS LT225/75/16D
X88 CONVERSION NAME PLATE CHEVROLET
YD6 REAR SPRING, BASE EQUIPMENT
YD7 AXLE (USED WITH R05) FOR SCHEDULING GVW PLATE
YE9 CONVENIENCE PACKAGE, COMFORT & DECOR LEVEL #3
YHP TIRE REAR LT225/75R16/D BL R/PE ST TL ALS
ZHP Spare Tire
ZQ3 SALES PACKAGE, DRIVER CONVENIENCE II / Tilt Wheel & Speed Control
ZY1 COLOR COMBINATION, SOLID (One color paint)
Z82 TRAILER PROVISIONS, SPECIAL EQUIPMENT, H.D. (Trailer brake wiring)
1SC PACKAGE-OPTION 03 (1SC)
1SZ PACKAGE OPTION- (1SZ)
13I INTERIOR TRIM, LT SMOKE GRAY (91)
132 TRIM COMBINATION, LEATHER, GRAY (2) (91)
43U PRIMARY COLOR, EXTERIOR, (91) ( “Emerald Green Metallic” according to the original documents, Dark metallic green)
6XD SPRING COMPTR SELECT FRT LH SUSP(6XD)
7XD SPRING COMPTR SELECT FRT RH SUSP(7XD)

BC/CC
U 177B
132 - The “13” is medium grey interior color, the “2” is leather bucket seating. The 13I above is “Light Smoke Grey” interior color

 

[AuroraGirl]

I've got no RPO for anti theft or security.
There are two for electric door locks, but I thought one was for electric locks and one was for the remote locking.

Here are my RPO codes. Let me know what I should be looking for.
As far as I can tell, my 98 C3500 does not have Passlock.

You must be registered for see images attach

 

[618 Syndicate]

As far as I can tell, my 98 C3500 does not have Passlock.

It might not now, but it did when it left the factory.